Boxelder Bug Pest Control in Illinois
Unfortunately, boxelder bugs call Illinois home, so your home or business could become a prime space for these pests to make their way inside looking for warmth and shelter. Boxelder bugs are especially prominent in the fall months. If you have a sun-facing wall, you know these pests all too well. And they’re hard to miss being that where there is one boxelder bugs – they are usually many.
If you’re struggling with boxelder, turn to the experts at American Pest Control for top-quality boxelder bug and other pest control in Illinois.
Signs of a Boxelder Bug Infestation
Boxelder bugs are primarily a nuisance pest, however their fecal material can cause a red stain on curtains, drapes, clothing, etc. When crushed or handled roughly, boxelder bugs can also produce a strong, disagreeable odor. Boxelder bugs generally become a problem when they invade homes, sheds, and garages in the fall and when they emerge in the spring. Like many overwintering pests, homeowners may see evidence of these bugs as the winter ends and they leave their overwintering site to go back outdoors.
The females lay clusters of straw-yellow eggs on stones, eaves, grass, shrubs, and trees – especially in the bark crevices of boxelder trees (hence their name). The eggs turn red as the embryos develop and hatch about two weeks later. The nymphs feed on fallen boxelder seeds and later on new leaves. There can be two generations per year in warmer regions.
In the fall, boxelder bugs become gregarious and congregate on the south side of rocks, trees, and buildings where the sun hits. After large masses gather, they migrate to nearby buildings or homes to overwinter. These pests tend to hide in small cracks and crevices in walls to insulate themselves from the cold winter temperatures.
Boxelder bugs are not known to bite, but their piercing-sucking mouthparts can occasionally puncture skin, causing a slight irritation and producing a red spot similar to a mosquito bite. When crushed or handled roughly, boxelder bugs may leave a reddish orange stain from their fecal material that can result in discoloration of curtains, drapes, clothing, etc.
They are among some of the most common pests in Illinois.

Boxelder Bugs
Boxelder bugs are black with reddish or orange markings on their back. Adult boxelder bugs have a body shape that is a somewhat flattened and elongated oval and is about half an inch long. They have six legs and two antennae that are typically half of their body length. Nymphs look similar to adults but lack wings and are bright red in color. Their red color can get them confused with the spotted lanternfly but they are nothing alike.
Boxelder bugs get their common name from the fact that they are often found on and around boxelder trees. This species is native throughout our area. Boxelder bugs are primarily a nuisance pest as they enter structures, including homes, sheds and garages to overwinter.
In autumn, boxelder bugs become gregarious and congregate on the south side of rocks, trees and buildings where the sun hits. After large masses gather, they migrate to nearby buildings or homes to overwinter. These pests tend to hide in small cracks and crevices in walls to insulate themselves from the colder winter temperatures. In late March to early April, adults leave their overwintering sites to return to their host trees for the warmer months.
Since boxelder bugs are usually inside looking for a place to wait out the colder months, it’s nothing you’re doing that’s attracting them other than having warmth and shelter. They can easily slip in through a crack or crevice or a screen that hasn’t been replaced. They can even sneak in on deliveries! If you have a lot of cracks and crevices or screens that have tears, then you’ll have boxelder bugs – and stink bugs and flies and moths and just about all other pests that make their way inside whether on purpose or by mistake.
As soon as you notice boxelder bugs around your property or on or in your home, seek our professional boxelder bug infestation control service. We offer you a free quote!
Dangers of Boxelder Bugs in the Home
Inside, boxelder bugs are primarily a nuisance pest, however their fecal material can cause a red stain on curtains, drapes, clothing, etc. When crushed or handled roughly, boxelder bugs can also produce a strong, disagreeable odor. Boxelder bugs generally become a problem when they invade homes, sheds, and garages in the fall and when they emerge in the spring. Like many overwintering pests, homeowners may see evidence of these bugs as the winter ends and they leave their overwintering site to go back outdoors.
The females lay clusters of straw-yellow eggs on stones, eaves, grass, shrubs, and trees – especially in the bark crevices of boxelder trees (hence their name). The eggs turn red as the embryos develop and hatch about two weeks later. The nymphs feed on fallen boxelder seeds and later on new leaves. There can be two generations per year in warmer regions.
Boxelder bugs are not known to bite, but their piercing-sucking mouthparts can occasionally puncture skin, causing a slight irritation and producing a red spot similar to a mosquito bite. When crushed or handled roughly, boxelder bugs may leave a reddish orange stain from their fecal material that can result in discoloration of curtains, drapes, clothing, etc.
Don’t wait, call us today to eradicate the problem before it gets worse.
Boxelder Bug Infestation Prevention
When getting rid of boxelder bugs that have already entered your home or business, no attempt should be made to kill them in wall voids because dead insect bodies can attract other bugs that like to feed on their carcasses like larder beetles, carpet beetles, etc. Experts recommend waiting until summer when all live overwintering adults are out of the wall voids. Keeping them out in the first place is your best bet. Be sure to:
- Repair holes in window and door screens
- Seal cracks and crevices with a good quality silicone or silicone-latex caulk
- Install door sweeps to all exterior entrances
To provide temporary relief while you wait for the summer, consider using a vacuum cleaner to get rid of the boxelder bugs. The bag should be removed to prevent the bugs from escaping. Then, seal up any entryways into the living space – window pulleys, window and door frames, baseboards, etc. – to prevent a future infestation. For electrical outlets, switch boxes, heating ducts and return air vents, remove the cover plate, seal, and replace. For light fixtures and ceiling fans, remove the fixture to its base plate, seal, and replace.
How to Get Rid of a Boxelder Bug Infestation
The best way to get rid of boxelder bugs is to prevent them from getting inside in the first place. Seal cracks and gaps around windows, doors, siding, and other potential entry points, and repair damaged screens. Remove leaves, debris, and other hiding places around your home, especially near boxelder, maple, and ash trees. If boxelder bugs have already entered your home, avoid crushing them, as they can leave stains and a noticeable odor. A professional pest control treatment can help reduce boxelder bug activity around your home and create a barrier that helps keep these seasonal pests outside where they belong.
Boxelder Bug Pest Control in Illinois
Boxelder bugs can be difficult to deal with once inside. And proper exclusion methods should be done a professional to ensure proper installation. And because they congregate in large numbers and crushing them emits a nasty odor, eradication may be difficult without a professional’s help.
Some of the biggest reasons you need professional boxelder bug extermination include:
- Professionals know exactly what type of pest control is most effective on boxelder bugs.
- A professional exterminator can quickly identify where the boxelder bugs are coming from, ensuring the infestation is addressed and taken care of.
- DIY boxelder bug control may provide some temporary relief, but in the long run, only professional boxelder bug infestation control in Illinois ensures the current pests are eliminated and don’t return.
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Schedule Professional Boxelder Bug Pest Control Today
To learn more about safe and effective boxelder bug control in Central Illinois, contact us! Whether you’re dealing with these pests in the home or in a commercial setting, our experts will completely terminate the boxelder bugs and even help keep them from coming back.
Call (800) 560-4250 to speak with a representative near you today. We’ll provide you with a free quote so you can get started with removing your pest problem!


