Month: May 2024

Effective Strategies for Dealing with Carpenter Bees 

Although they look similar to the cheerful bumblebee, carpenter bees have very different nesting habits than their fluffier counterparts. Bumblebees nest in existing cavities, including those left behind by rodents or in bird houses and man-made structures. Carpenter bees, on the other hand, create their own nests by digging into wood. In the process, these bees can create significant structural damage, which is why preventing carpenter bees from nesting on your property is essential. 

Catseye Pest Control has been providing carpenter bee infestation solutions to properties across Massachusetts, Connecticut, Rhode Island, and New Hampshire since 1987. Let’s explore some tips for how to get rid of carpenter bees and keep them from returning for long-term peace of mind.  

Carpenter Bees 101 

Before you can effectively deal with a carpenter bee infestation, it’s critical to properly identify these pests. These six-legged insects fall into the Apidae classification of long-tongued bees. They can be found worldwide on every continent with the exception of Antarctica. Throughout the United States, the most common species is the Eastern carpenter bee. 

Identifying Carpenter Bees 

You can find several species of carpenter bees in the U.S. The most common is the eastern carpenter bee (Xylocopa virginica), which has yellow and black coloration that makes them look similar to bumblebees. They are large insects, typically reaching 0.75 to 1 inch in length. Female carpenter bees have black faces, while males have yellow faces.  

Oftentimes, carpenter bees can be seen “hovering” near the eaves/roofline of the home whereas bumblebees often fly lower to the ground. Additionally, carpenter bees, when they have drilled into a piece of wood such as a trimboard, will leave a “splatter” of the drilled wood staining the siding. 

Other types of carpenter bees that live outside of this region include: 

Southern Carpenter Bee (Xylocopa micans): Typically found in southern coastal areas and wetlands, they usually do not travel farther north than Virginia. These bees have a metallic sheen. 

California Carpenter Bee (Xylocopa californica): Also with a metallic body, these carpenter bees prefer making their nests in the limbs of soft, dry trees like oak trees. They can be found in California and throughout the Southwest. 

Violet Carpenter Bee (Xylocopa violacea): You may never get a chance to see this beauty in person because it is native to Asia and currently inhabits Asia and parts of Europe. The violet carpenter bee is shiny and black with iridescent wings with a violet-blue hue.  

One easy way to tell carpenter bees apart from bumblebees is to look at their abdomens. Carpenter bees have shiny, smooth, hairless black abdomens. In contrast, bumblebees have yellow and black hair on their abdomens.  

Behavior and Environment 

The Eastern carpenter bee is native to the U.S. These bees are important to the ecosystem because they are pollinators. Carpenter bees are rarely aggressive, although the females will sting if the nest is threatened. The danger comes from these solitary bees’ nesting habits. 

Females use their strong jaws to tunnel into wood, creating a network of tunnels to lay their eggs and raise their young. They don’t eat the wood. Rather, they feed on nectar and pollen. One female can excavate approximately one inch of wood daily. Over time, that can add up and create structural instability when those tunnels are created in fencing, decks, porches, and other structures.  

A carpenter bee sips nectar from a Hosta.

Preventing Carpenter Bee Infestations 

Year after year, carpenter bees may return to their old nests to continue working on them. Even though the damage may occur slowly, it can accumulate over time. Signs of a potential infestation include seeing bees hovering about, small piles of sawdust near perfectly “drilled” holes, and fan-shaped stains on the sides of a wooden structure.  

Preventing carpenter bees from nesting in your wooden structures is the best way to deal with them. When dealing with new construction, using hardwoods can help reduce the odds of carpenter bees attempting to create nests. Additional tips for prevention include the following: 

Sealing Entry Points 

Painting, varnishing, and using other products to seal wood can help deter carpenter bees. Additionally, adding metal flashing, wire screening, or another type of cap to the unfinished end of wood surfaces can also prevent the bees from tunneling into the wood. 

If you already have a few tunnels, you can seal those holes to discourage the bees from returning to expand the nest. Bees that overwinter in the tunnels typically come out in spring to mate, and new adult bees typically emerge from the nests in late summer. Time your project accordingly to ensure the tunnels are unoccupied. Then fill them with steel wool or wood putty and caulk over them and paint or varnish the wood to seal it.  

Removing Old Wood  

Sealing wood to create a barrier against carpenter bees and closing off holes is an excellent starting point. It’s also helpful to remove decaying and weathered wood from the property. This type of wood can attract carpenter bees to the area, making it more likely you could end up with an infestation. When building new structures, consider the benefits of using vinyl or composite materials to reduce the odds of attracting carpenter bees.  

Natural Remedies for Carpenter Bees 

Because they play a role in maintaining the environment and serve an important job as pollinators, using insecticides should be a last resort for dealing with carpenter bees.  

Homemade Deterrents 

A few easy DIY options to repel carpenter bees include: 

  • Playing loud music near the nests, which causes the bees to exit, allowing you to seal it up 
  • Spraying wood with citrus-scented products, which help repel bees because they don’t like the smell 
  • Applying almond oil to wood, which works similarly to citrus in repelling carpenter bees 

Decoy Traps 

Carpenter bees won’t nest in the same area as wasps. To repel them, you can create a decoy wasp nest by adding air to a paper bag and closing off the end. Hang it near susceptible areas to keep bees from tunneling and building any new nests. 

This will not only prevent bees, but also repel those already living in your wooden structures. Installing traps that hang near nests, in roof eaves, and in overhangs can also help remove these pollinators safely.  

When to Call a Professional 

If you suspect a widespread carpenter bee problem or you are uncomfortable trying to handle the problem yourself, it’s time to contact professionals. Catseye’s friendly technicians have the experience, education, and equipment needed to promptly and safely eliminate the infestation and restore your peace of mind.  

Contact Catseye today to learn more about our services, including our preventive, ongoing Platinum Protection program. Schedule a free inspection to get started.  

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Waxy lady beetles come to the rescue of pest-plagued crapemyrtles, Hyperaspis spp.

 

This white waxy creature is no pest. It is the larva of a Hyperaspis lady beetle, destroyer of dastardly crapemyrtle bark scale.

 

In a previous episode we met the invasive crapemyrtle bark scale, a dastardly sucking insect new to the DMV that wreaks havoc on our widely planted crapemyrtles. Populations of this eruptive pest reach fantastic densities on the bark of these flowering trees. As thousands of probing mouthparts remove plant sap, branches of crapemyrtle wither and die. Prodigious volumes of sweet sticky honeydew excreted by the bark scale rain down on leaves and bark of infested plants and coat underlying vegetation and objects. Carbohydrate rich honeydew serves as a medium for the growth of black sooty mold fungus which reduces the photosynthetic capacity of fouled plants. Even more problematic are the yellow jackets, paper wasps, and other stinging insects that are attracted to the honeydew.  

Adult Hyperaspis beetles will continue the carnage of crapemyrtle bark scales.

Ah, but there are heroes in this story and one such natural enemy of scales insects in general and crapemyrtle bark scale in particular are small black and red-spotted lady beetles known as Hyperaspis.  Several species of Hyperaspis are native to North America and many specialize at making meals of scale insects and their eggs, which are deposited in waxy egg sacs like those of the crapemyrtle bark scale. Larvae of Hyperaspis look much more like a mealybug than the fierce predators that they are. Cases of mistaken identity surround this predator insect and many of these fine beneficial insects are misidentified and mistakenly killed. The larva of Hyperaspis produces wax from glands lining its sides. This wax is more than a way to be styling. Studies of related species of waxy lady beetles reveal that the wax reduces the effectiveness of ants and other predators that might like to make a meal of a lady beetle larva. In this way, the wax serves much like the cloak of trash carrying lacewing larvae we met in a previous episode. One fairly easy way to distinguish the larva of this beneficial ladybug from pesky mealybugs is to give it a little poke in the behind. Mealybugs tend to stay in one place and move slowly. Ladybug larvae usually amble away quickly when disturbed.

Honeydew, sooty mold, and white waxy egg sacs full of pink eggs are hallmarks of dastardly crapemyrtle bark scales. But native heroes are on the scene, the larvae of lady beetles called Hyperaspis, wearing cloaks of white wax. See these two parked near egg sacs of the scale. What are they up to? Through the lens of the microscope, watch as one chews a hole in the egg sac, thrusts its head inside and gobbles up eggs, and then when finished, leaves to find another meal. After completing larval development and pupating, adults will return to the scale hunting ground to continue their carnage of crapemyrtle bark scales. You go Hyperaspis!

Hordes of waxy larvae may eat several thousand immature scale insects during the course of development and the adult beetles consume many harmful scales too. Later in summer, Hyperaspis larvae complete development and become adults. Although the larvae of Hyperaspis are somewhat hard to recognize as good guys, adult beetles are easily recognized. The ones we met in this episode are gorgeous shiny black beetles with four red spots adorning their wing covers. Some species of Hyperaspis have fewer spots or bear combinations of yellowish spots or stripes on their back. By early December, adults have departed scale-infested trees to spend the winter in protected locations beneath bark or in leaf litter on the ground. Next spring, they will return to scale-infested trees and lay eggs that will hatch into stealthy, wax-cloaked larvae. Keep an eye out for these small masters of disguise and when you see them, do not spray them with insecticides. They are working for you!   

Acknowledgements

The fascinating article “Hyperaspis Lady Beetles” by James Baker was consulted to prepare this episode. Thanks to Dr. Shrewsbury for help wrangling lady beetles.

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Preventive Pest Control Measures Every Retailer Should Implement 

Every year, pest infestations cost businesses across the United States nearly $7 billion. Worse, besides temporarily hurting your bottom line, it can cost your establishment in lasting ways, including leaving you with a tarnished brand identity that causes you to lose business.  

The threat is very real, but you can take proactive steps to prevent infestations from derailing your retail business. Catseye Pest Control has decades of experience helping stores just like yours remain pest-free. When preparing, it’s critical to understand what you’re up against, including the common pests you may face. Overcoming the challenge is all about taking preventive actions that can safeguard your property, including knowing when to call for professional help.  

Importance of Pest Control for Retail 

Imagine shopping in your favorite store, only to come across a swarm of ants, scurrying cockroaches, or skittering rodents. Now ask yourself how likely you would be to return to that store.  

Temporary closures, lost productivity, cost increases due to damaged products, and other business losses can quickly add up and leave you holding a hefty bill. Given the costs of doing business in the retail industry, pest-related expenses are one bill you want to avoid at all costs.  

Monthly rental costs for retail real estate soared to $22.95 per square foot in 2023, compared to $19.40 per square foot in 2013. That data from Statista underscores the importance of using your space wisely and in ways that put your retail business’ best foot forward.  

All it takes is one pest to potentially ruin the carefully curated shopping experience you worked hard to create. Additionally, many pests, including rodents, can carry dangerous diseases and create property damage. This is why retail pest control and prevention are so incredibly essential for retailers.  

Common Pests Found in Retail Stores 

Retail food facilities are among the most challenging retail environments to control, primarily due to their unique settings and complex environments with food storage. However, thanks to doors frequently opening and closing and an abundance of foot traffic, retail stores of all types are vulnerable to various pests, including the following: 

Rodents 

Mice and rats can wreak havoc on a retail store. Rodents leave messes everywhere they go, including tiny, germ-filled cylindrical droppings and gnawed food items. Their saliva, urine, and fecal matter may spread disease-causing bacteria, viruses, or fungi. Additionally, rodents can carry other hitchhiking pests, like mites and fleas, inside along with them. Add in the potential damage from chewing on insulation, wiring, and structural elements, and these pests can be a real nightmare.  

Cockroaches 

The sight of these insects, which have roamed the earth for more than 100 million years, can cause a major case of the heebie-jeebies for many people. Additionally, common species, including German, Brown-Banded, American, and Oriental cockroaches, can trigger allergies and asthma attacks and contaminate surfaces and food with dangerous germs.  

Ants 

Ants don’t typically present as much of a public health hazard as cockroaches and other insects, although they can contaminate surfaces and food. However, their presence does leave a lasting impression on customers. Some species, like fire ants, can sting or bite people. Other species, like carpenter ants, can create significant structural damage to your establishment. These typically social pests can create large colonies and present an enormous challenge when attempting to eliminate them without professional help.  

Termites 

Many people don’t realize they even have termites until the damage is already extensive, which is why routine inspections are so important. Subterranean termites, which are commonly found in this region, are wood-consuming insects. They chew through wood 24/7, causing billions of dollars in damage to homes and commercial properties.  

Wildlife and Birds 

Insects aren’t the only danger. Nuisance wildlife like chipmunks, squirrels, and birds pose another threat. These pests can potentially spread and transmit illness-causing pathogens, carry secondary pests like ticks and mites into your business, and make a real mess of your retail establishment.  

Cleaning Best Practices 

Retailers have a tremendous duty to their customers and clientele, who rely on them to provide a safe, clean environment. Shoppers do not want to enter a store and see dirty floors, overflowing garbage, and filthy surfaces. Keeping your environment clean does more than just improve the impression you make on customers. It can also halt many pest problems before they begin by eliminating sources of food and shelter. These two elements often act like a neon “Welcome” sign to pests.  

Regular Cleaning Routines 

Depending on the nature of your business, you may have more intense needs than others. However, some of the most common actions you should be taking on a routine basis include: 

  • Regularly sweeping, vacuuming, and mopping floors  
  • Wiping down counters and other surfaces 
  • Cleaning up spills or messes promptly 
  • Maintaining sanitized restrooms 

Proper Waste Management 

Regularly taking out the garbage and waste materials is the first step. However, it’s also essential to ensure that trash and other waste is stored in secure, lidded containers, with dumpsters kept away from the building’s exterior. 

Food Storage and Handling Protocols 

If you aren’t a food retailer but allow food storage on the premises, it’s still crucial to follow safe food storage and handling. Keep food in airtight containers and always cook it to safe temperatures and refrigerate promptly as necessary. Additionally, employees should be instructed to wash their hands and clean food preparation surfaces frequently. Any food or beverage spills should be cleaned up promptly to avoid attracting pests and to maintain shoppers’ safety.  

Maintenance and Pest Control 

Promptly fixing — or calling for a professional to fix — problems like leaky pipes can help reduce the risk of certain pests. Moisture-loving insects like cockroaches and termites and thirsty wildlife and rodents could be attracted by the easy access to water. Also, regularly inspecting the building and noting areas like broken screens, worn weatherstripping, and any gaps around utility lines can help prevent pests from entering.  

Sealing Cracks and Entry Points 

Rats, mice, and other pests will take advantage of any access they are given. Cracks, gaps, and other openings provide easy entry. Sealing them with caulk, screening, wire mesh, or exclusion systems like Cat-Guard, which is a permanent barrier for targeted protection, can make a significant difference. 

Pest Monitoring and Detection 

Ongoing monitoring is one of the cornerstones of any effective Integrated Pest Management strategy. IPM seeks to minimize the use of chemical pest control, favoring preventive approaches and early detection. Many pest problems are easier to solve if you can catch them early.  

Catseye’s commercial pest control technicians provide detailed notes about when they visit the property, what they discovered, and how the issues were addressed. Having a professional, trained eye keeping watch over your retail store can provide peace of mind and help catch potential problems before they become widespread. 

When to Call a Commercial Pest Control Professional 

Retailers have a responsibility to their business, their employees, and their customers. Partnering with a qualified professional pest control company from the beginning can help ensure your business remains free of pest activity. 

Don’t wait until you see a pest to get the support you need to protect your brand and your clientele. Contact Catseye today to learn more about our services or to schedule a free inspection.  

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From the mail bag – “Oh they’re back and they’re bad”: Spotted lanternfly nymphs, Lycorma delicatula

 

Spotted lanternfly nymphs are back, and they’re bad!

 

Last week I received a whimsical video from two avid young bug hunters who spotted spotted lanternfly nymphs in a park in Washington County, Maryland. Dressed in domino-colored exoskeletons of black and white, nymphs of spotted lanternflies are unmistakable. As these budding naturalists noted, they’re back and they’re bad. This season of lanternfly evil began about three weeks ago when lanternfly nymphs hatched from overwintering eggs deposited by their mothers last autumn.

Tiny, wraithlike spotted lanternfly nymphs pop the lid on their egg case and hatch head-first from eggs deposited last autumn.

Recently, I was asked when lanternflies would go away. Like other invasive species we’ve met, such as gypsy moths, brown marmorated stink bugs, emerald ash borers, and euonymus leaf-notchers just to name a few, the answer is this: they are not going away. At this time in Maryland, spotted lanternflies are established members of our ecosystems in all but four of our southernmost counties according to the Maryland Department of Agriculture. They have also established breeding populations in more than a dozen states and spread some 600 miles distant from their point of introduction in Berks County, Pennsylvania. The good news is that, in many locations, spotted lanternfly populations have declined dramatically. In parts of Pennsylvania, naturally occurring fungi put a beatdown on lanternfly populations. A recent study by scientists revealed that a vast number of established predators are helping to quell the lanternfly invasion. Arthropods led the reported carnage with more than 200 attacks by spiders, 196 attacks by mantids, 177 attacks by wasps, 55 attacks by sucking predators like assassin bugs, and another 21 attacks by other arthropods. Twenty some families of birds accounted for more than 500 attacks, with ground dwellers like chickens and pheasants leading the way. Death delivered by members of the cardinal, mocking bird, wren, and several other bird clans contributed to the total. Mammals, amphibians, fish and non-feathered reptiles also got into the act accounting for 106 additional observations.

Two budding naturalists have it right. Spotted lanternflies are back and they’re bad. Don’t be surprised to see dozens of spotted lanternfly nymphs feeding on small branches of trees and shrubs and stems of herbaceous plants. White spotted nymphs are scrambling up tree trunks. Leaves of maples and scores of other plants can be festooned with legions of lanternfly nymphs. Will predators and disease quell their mischief? Only time will tell.

Ravaging hordes of spotted lanternfly nymphs may be controlled by natural enemies, by simple mechanical means such as knocking them into soapy water, or by the use of OMRI approved pesticides.

Circling back to the lanternfly nymphs at the top of this episode, what should you do if you find these rascals on your plants?  Well, you could just let them serve as a feast for the many predators and pathogens that will make a meal of them. Of course, if you are a viticulturalist, eliminating as many as possible is the order of the day and there are many highly efficacious insecticides to help do the job. But for homeowners, if you don’t want to wait for Mother Nature to intercede, you can knock them off your plants into a container of soapy water. They are not good swimmers. Or you can use one of several products such as insecticidal soaps, horticultural oils, or natural pyrethrins (not synthetic pyrethroids) listed for use on organic vegetables by the Organic Materials Review Institute (OMRI). Look for the OMRI symbol on the label of the insecticide. Excellent studies conducted by scientists at Penn State found these active ingredients provided excellent or good control of spotted lanternfly nymphs. Always read the label and follow instructions to the letter if you decide to go the insecticide route. Good luck dealing with these noisome pests from afar.

To learn more about the biology and management of spotted lanternfly, please click on this link: https://extension.psu.edu/spotted-lanternfly-management-guide

Acknowledgements

Penn State’s most excellent spotted lanternfly website was used to prepare this episode. Bug of the Week thanks Eloise and Abbigail for providing video footage and inspiration for this episode.

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Vanishing viburnums: vandalism by the Viburnum leaf beetle, Pyrrhalta viburni

 

Larvae of viburnum leaf beetles can lay waste to beautiful viburnums.

 

Yikes! Shredded leaves are the hallmark of feeding by viburnum leaf beetle larvae.

Last week I encountered a planting of viburnums vandalized by yet another invasive species of insect. One of my favorite flowering shrubs, viburnum, had been stripped of 99.9 % of their leaves. My first thought was that some devastating weather event like drought or flood or some hideous disease had laid waste to these usually lovely shrubs. On closer inspection of the few leaves that remained, the culprit of this devastation was found – larvae of the viburnum leaf beetle. The saga of this invader from Europe begins in 1947 when it was first discovered in Canada. It took almost five decades to move south across the US border, when it was detected in New York in 1996. It has now spread to more than 20 states ranging from Maine to Florida and as far west as Washington state.

As adult beetles and their offspring feed on viburnum leaves, they create a type of injury called skeletonization, dining on tender leaf tissue between tough leave veins. So complete is their feasting that only a lacy memory of a leaf remains when they are done. These ghostly leaves soon wither, die, and drop, leaving naked stems behind. This season of misery began when eggs deposited last summer and autumn by female beetles hatched from tiny egg-niches lining small branches. In Maryland, eggs hatch near the time when Japanese camellia is in full bloom in early spring. Each female beetle can lay as many as 500 eggs. Little wonder why viburnum leaves vanish with so many hungry mouths at work.  After completing three stages of larval development, larvae move to the soil and pupate. By June, adults emerge from the soil, clamber up stems, and begin to skeletonize nutritious viburnum leaves. In summer and autumn females chew small pits along branches and deposit five to eight eggs in each pit. This tiny nursery is then sealed with a cap of mother’s poop, chewed bark, and mucous. I have to wonder if young beetles undergo intense sessions of therapy to understand why their mother pooped on them. Well, this poopy mucous cap is thought to protect developing eggs from predators and help prevent moisture loss.

Oh no, what happened to these viburnums? They look beat. Environmental stress? Hideous disease? Let’s take a closer look at the few green leaves left standing. This is the larva of the nefarious viburnum leaf beetle, invader from Europe that vandalizes viburnums. Thousands of hungry larval mouths completely stripped these shrubs.  Later this year adults emerge, mate, feast, and lay eggs, levying more misery on viburnums.

In June adult viburnum leaf beetles will emerge from the soil and move to leaves to mate, feed, and lay eggs.

What can be done to thwart these rascals? Clever research conducted by Cornell University revealed significant variation in susceptibility of different species of viburnums to attack by viburnum leaf beetle. Sadly, some of my favorite viburnums are on the “most susceptible” list, including our abundant native arrowwood viburnum, Viburnum dentatum. Two other species on the “most susceptible” list are   Viburnum trilobum (previously known as Viburnum opulus var. trilobum), European cranberry bush viburnum, and Viburnum sargentii, Sargent viburnum. The University of Maryland lists these viburnums as resistant to viburnum leaf beetle: ‘Dawn’ viburnum, V. x bodnantense, Koreanspice viburnum, V. carlesii, David viburnum, V. davidii, Judd viburnum, V. x juddii, doublefile viburnum, V. plicatum, doublefile viburnum, V. plicatum f. tomentosum, leatherleaf viburnum, V. rhytidophyllum, tea viburnum, V. setigerum, and Siebold viburnum, V. sieboldii

Viburnum branches bear the scars of egg nests made by viburnum leaf beetles.

If redesigning your landscape by planting resistant viburnums is not feasible, here are a couple additional things to consider. Sometime between the last killing frost of a season and the following spring, prune out branches bearing egg masses of viburnum leaf beetles and destroy them. Several species of predators attack and eat viburnum leaf beetles, including lacewing larvae, lady beetle larvae, and assassin bug larvae and adults. Including a rich diversity of flowering herbaceous and woody plants in your landscape will help support these beneficial insects that depend on floral resources and alternate prey to become resident in your landscape. If all else fails and as a last resort, you can annihilate infestations of beetles for at least a short period of time by applying insecticides labeled for beetle control. Because viburnums are so heavily visited by pollinators, systemic insecticides that may show up in nectar or pollen are not the best choice. Several products listed for use on organic vegetables listed by the Organic Materials Review Institute (OMRI) may be a better choice. Always read the label and follow instructions to the letter if you decide to go the insecticide route. Good luck saving your lovely viburnums.

Acknowledgements

Bug of the Week thanks Dr. Paula Shrewsbury for contributing images and comments to the episode. Bug of the Week is supported by the Department of Entomology at the University of Maryland and grants from USDA – NIFA. To learn more about viburnum leaf beetle and its management, please visit the following websites that were consulted for this episode:

https://extension.umd.edu/resource/viburnum-leaf-beetle/

https://www.youtube.com/watch?v=_BPp-9MljSc

https://entnemdept.ufl.edu/creatures/orn/beetles/viburnum_leaf_beetle.htm#:~:text=The%20viburnum%20leaf%20beetle%20overwinters,%2F5%20inch)%20at%20maturity.

https://www.canr.msu.edu/news/keep_your_eyes_open_for_the_viburnum_leaf_beetles

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Inside the Hive: Identifying a Paper Wasp Nest 

Paper wasps get a bad rap to some extent. Although they do pack a painful sting, these six-legged insects can play a surprisingly beneficial role in gardens. First, they occasionally feed on nectar, which aids in pollination. Additionally, paper wasps often prey on other nuisance insects in the garden, including beetle larvae, flies, and caterpillars.  

Paper wasps typically have brownish bodies with yellow or red markings that can be muted or vibrant in color, depending on the species. They look similar to thinner-waisted yellow jackets but have less colorful bodies that grow anywhere from 5/8 to 3/4 inch in size. 

Knowing what the insects look like is important, but it also helps to know what does a paper wasp nest look like? Being able to identify nests is critical to understanding which insects you are dealing with and how to proceed.  

As the region’s go-to company for professional pest control, Catseye Pest Control understands how unnerving it can be to find wasp nests on your property. Let’s explore the unique characteristics of paper wasp nests so you can identify them if these insects move onto your property.  

Introduction to Paper Wasp Nests 

Now that you know a bit more about the paper wasp, let’s take a closer look at these insects’ unique nests. It’s vital to be aware of what to look for when identifying them. Many people inadvertently get too close and end up on the wrong end of a protective paper wasp’s stinger.  

Characteristics of Paper Wasp Nests 

The paper wasp’s nest can vary depending on the species. Single-comb nests don’t have a covering and can range from just a few cells to up to 400 cells or more. Paper wasp nests look like inverted umbrellas hanging from sheltered surfaces like structural voids and the underside of leaves. The exterior of the nest looks very similar to paper, which is how these wasps earned the “paper wasp” name. 

Paper Wasp Nest Characteristics at a Glance: 

  • Uncovered with multiple cells 
  • Shaped like an inverted umbrella 
  • Papery, gray exterior 
  • Hang in sheltered areas 
A paper wasp with bright yellow markings works on building its nest against a blurred green background

Construction of Paper Wasp Nests 

Mated females choose a nesting site and then find wood sources nearby. Females scrape wood fibers from sources like fences, cardboard, trees, and logs using powerful jaws. Once mixed with their saliva, the wood fibers start breaking down to create the soft, papery pulp they use to construct their nests. Workers will aid the queen in creating hexagon-shaped cells, adding more cells as the colony grows. As the pulp dries, it takes on its characteristic paper-like appearance. 

Identifying Paper Wasp Nests in Your Home 

As discussed, the nests themselves have unique characteristics. You might also see paper wasps flying around the area. You can identify these wasps from other species based on their elongated second sections in their abdomens and longer second and third pairs of legs. You might find new nests as spring warms up and mated females start building their nests to lay eggs. Interestingly, female paper wasps also reuse nests from year-to-year.  

Paper wasps build their nests in protected areas like door and window frames, porch ceilings, shrubbery and tree branches, and attic rafters. You may also find them in spots like chimneys, under attic rafters, roof overhangs, and under railings, joists, porches, and decks. Paper wasps have also built nests inside open-ended pipes, birdhouses, unused umbrellas and grill covers, and inside the bumpers of abandoned vehicles. 

FAQs About Paper Wasp Nests 

You have pest questions, and Catseye has answers. Take a look at some of the most frequent questions people have about paper wasp nests below. If you don’t see yours, feel free to contact Catseye for prompt assistance.  

What Should I Do If I Find a Paper Wasp Nest? 

If the nest is small, such as no bigger than about the size of a quarter, then the female probably hasn’t laid her eggs yet. Small nests like these can be removed relatively easily at night when the wasps aren’t active. However, if the nest is in an out-of-the-way location, you might consider leaving it alone. These wasps can help control other outdoor pests. 

Are Paper Wasps Aggressive? 

Paper wasps won’t go out of their way to sting you. However, if they feel threatened or believe the nest is threatened, they can retaliate by delivering some painful stings. In many cases, paper wasps will first deliver a warning that you’re too close to the nest by flying into you.  

A close-up view of a paper wasp with bright yellow markings building a small nest on the underside of a branch

Can Paper Wasps Damage Property? 

Although they are not as vigorous as carpenter ants and termites and their damage is minimal, paper wasps can scrape wood from homes, railings, porches, decks, and fences. The damage won’t be structural in nature, but it can hinder the aesthetic appeal of a property. 

How Can I Get Rid of Paper Wasps? 

You can try to eliminate small nests on your own, but you should wear thick clothing to protect yourself. Try using methods like insecticides designed for wasp control that you can spray directly on the nest. Avoid using a flashlight, which could attract other wasps and stand as far away from the nest as possible. Large nests located in areas frequented by people and pets require professional removal for optimal safety.  

When to Call a Professional to Remove a Paper Wasp Nest 

Paper wasps play a beneficial role in the garden. Professionals can help weigh the options and ensure the removal is handled safely. Never try to remove large nests on your own. Instead, contact the experts at Catseye, who can deftly handle large nests and those located in spots where people and pets could inadvertently disturb them.  

Don’t let paper wasps interfere with your outdoor fun. Schedule a free inspection with Catseye for a full property assessment and tips to keep yourself and those you care about safe all season long.  

The post Inside the Hive: Identifying a Paper Wasp Nest  appeared first on Catseye Pest Control.

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When ants move in: Odorous house ants, Tapinoma sessile

 

Odorous house ants regularly tend aphids and gather sugar-rich honeydew produced by the aphids.

 

A drop of syrup on a countertop can attract a large crowd of ants.

Last week with the return of summer weather here in the DMV, it wasn’t just periodical cicadas that amped up activity. When Mother Nature turns up the heat, other cold-blooded insects resume their quest for food and shelter. My personal home invasion began on a warm day last week when legions of foraging worker ants laid down a trail from my patio door, along the baseboard, and up the wall to a drop of syrup on the kitchen counter. Odorous house ants have become a perennial guest at Bug of the Week. These small brown ants invade homes throughout our region each spring. This ant earns its name by virtue of the distinctive smell it makes when crushed between your fingers or on a counter. The odor is reminiscent of slightly fermented coconuts. 

How and why does this invasion recur each year? After spending the chilly months of winter and early spring in a state of relative inactivity outdoors, with the return of warm weather, worker ants conduct an unending search for sugars, proteins, and fats to feed hundreds of hungry mouths in their burgeoning colony. In the wild, plants like my peony and other insects like the aphids on my peony provide these foods. When ants locate a rich source of food, such as the sugary honeydew produced by a colony of aphids or scale insects, they establish a trail marked by chemicals called pheromones. The trail leads other workers from the nest to the bounty. 

With the return of summer-like weather, odorous house ants can be found outdoors foraging at floral nectaries like those on a peony. Honeydew produced by phloem feeding insects like aphids is an irresistible source of food for ants. When sweets drip on countertops, scouts recruit other workers and a full-blown home invasion can ensue.  Baits laced with insecticides can foil ant invasions as one by one, workers collect the toxic treat, return to the colony, and poison their nestmates.

Outdoors, odorous house ants nest beneath stones or fallen logs. I usually have several colonies in my yard in a woodpile or under stones in a wall. However, odorous house ants are very opportunistic and will occasionally enter homes to set up shop. I have discovered colonies of these rascals in my wall voids and in electrical appliances, including a surge protector beneath my desk. Their quest for food brings them into homes and a few grains of sugar on the counter, a pet dish on the floor, or a leaky bottle of pancake syrup in the pantry, will often initiate a full-scale invasion by searching workers. If you find ants and their telltale trails on counters or along baseboards, try to locate the source of food and then follow the trail back to the point of entry into your home. To foil these raiders, first eliminate as many sources of food as possible. Clean the counters, mop up drips, and get pet food off the floor after your pets have eaten. Be sure that no syrup or sweets are spilled or leaking in your cupboards. Ant trails on the counter or floor can be disrupted by spraying them with household cleansers. 

This highly attractive poison bait will bring a swift end to home-invading odorous house ants.

You can buy ant traps or purchase tubes of liquid or gelatin ant baits. Place ant traps or baits at locations indicated on the label. I usually place one near the point of entry to my home and several others around my counters and near their raiding columns. The traps and baits contain a lure that attracts ants searching for sweets or fatty foods. The lure contains poison. Workers ingest the toxin and are killed, or in some cases they carry the toxic treat back to the colony and feed the deadly meal to the queens and their nest mates and, voilà, the royals are assassinated and the colony along with them. A few well-placed bait stations in my kitchen put an end to the ant trails in a matter of days. To be effective, the bait must attract the ants you want to control. If you purchase a bait or ant trap, and the ants eschew your invitation, well, get yourself another type of trap or bait.

Whenever you use a product containing an insecticide, be sure to follow precisely the instructions on the label. Never apply pesticides directly to surfaces used for food preparation or consumption like countertops or tables. Many species of ants can become visitors or residents in our homes. Large black ants in the home, especially ones with wings, may be carpenter ants and a sign of more serious problems than just a little sugary larceny. If you have concerns or questions regarding the identity or management of any six-legged vandals, contact the local university extension office in your county or state for advice.

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