Each year in Lacey, boxelder bugs appear as the weather warms. You May spot them on siding, windows, decks, and fences. Their dark bodies with bright red lines and red markings make them easy to see on sunny walls. Boxelder bugs are true bugs, a group with similar body shapes and feeding habits.
For most homeowners, boxelder bugs are a nuisance pest, not dangerous. Like stink bugs, they gather in large numbers near homes. Large numbers are more common in neighborhoods with boxelder or maple trees.
This guide covers why they appear each summer, where they gather, how they get inside, and how boxelder bug control can help prevent repeat infestations.
Key Takeaways
Boxelder bug season in Lacey
Boxelder bugs surge twice each year, first in summer as oversummering adults warm up on sunny siding, then again in fall as they cluster on walls to find summer shelter. Warmer cells mean heavier activity.
- Boxelder bugs spend summer in protected oversummering sites around homes.
- Early summer warmth and sunny days bring boxelder bugs back out.
- Boxelder trees, female boxelder trees, and maple trees are common food sources.
- Small gaps around siding, doors, and windows become entry points.
- Caulk, weather-stripping, and routine pest control can help reduce infestations.
Why Boxelder Bugs Appear Each Summer
Summer weather triggers their activity.
Oversummering in Protected Spots
Boxelder bugs survive summer by hiding in wall voids, attics, and small crevices. Many stay there until temperatures rise.
Warmth Pulls Them Back Out
In early summer, adult boxelder bugs become active. Sunny days warm exterior surfaces like siding and brick, drawing them into homes. The number of boxelder bugs can seem sudden, but they were usually already nearby.
Their Seasonal Cycle Starts Again
As the weather warms, their life cycle starts again. Adult boxelder bugs return to host trees to feed and lay eggs, using mouthparts to draw nutrients from leaves and seeds. The eggs hatch into nymphs that grow through several stages before early summer. As more nymphs develop, infestations build over time.
Where They Gather Around Homes
Some areas of your property attract more activity than others.
Sunny Siding and Exterior Walls
Boxelder bugs seek out warm surfaces. They often rest on sunny siding and exterior walls, which is one of the first signs of activity.
Windows, Trim, and Door Frames
Boxelder bugs gather around windows, trim, and door frames where warmth collects. These areas can also have small gaps that give quick access to shelter.
Decks, Fences, and Nearby Trees
Decks and fences attract them when they are close to host trees. Boxelder trees and maple trees provide food sources, and female boxelder trees are especially attractive due to their seed pods. When these trees are nearby, boxelder bugs stay close to the home.
How They Get Inside
Small openings are enough for boxelder bugs to get inside.
Gaps Around Doors and Windows
These gaps often go unnoticed until boxelder bugs appear indoors.
Cracks Along Siding and Foundation
Cracks along siding, trim, and foundation lines can also let them inside. Sealing these cracks early can help reduce the risk of a boxelder bug infestation.
Quiet Indoor Spaces
Once indoors, boxelder bugs move into wall voids, attics, and other still areas. Even small numbers near windows can grow into a larger boxelder bug problem over time.
How to Reduce Summer Infestations
Prevention works best before activity increases.
Seal Cracks and Check Entry Points
Use caulk to seal cracks around windows, siding, and utility openings. Replace worn weather-stripping. Sealing these gaps limits entry points and lowers indoor infestations.
Cut Back Shelter Near the House
Trim branches that touch the house and reduce clutter near the foundation. Fewer outdoor hiding places can limit oversummering and reduce boxelder bug numbers around your property.
Remove Small Groups the Right Way
If you see a few boxelder bugs, soapy water can remove them from siding or windows with low risk. Removing them this way controls small activity, but deeper hiding places may still need attention.
Book Boxelder Bug Control in Lacey
Professional services can reduce repeated issues.
PCI Pest Control includes occasional invaders, such as boxelder bugs, in our standard pest control coverage. We also offer a Pest Control Evaluation for active concerns. For ongoing protection, we provide service plans and callbacks for covered pests between visits.
If boxelder bugs keep showing up on your siding, near windows, or in your attic each summer, we can inspect the problem areas and recommend next steps.
Contact us today to ask about an ongoing pest control plan and get ahead of boxelder bugs before they become a larger problem.
FAQs
u003cstrongu003eWhy do boxelder bugs show up in early summer?u003c/strongu003e
Boxelder bugs become active when warm weather returns. After oversummering, they move toward warmth and light, which is why they appear on sunny walls first.
u003cstrongu003eDo boxelder bugs come from nearby trees?u003c/strongu003e
Yes. Boxelder bugs often stay close to boxelder trees and maple trees. Those trees act as host trees and provide food sources that keep them active nearby.
u003cstrongu003eWhat is the best way to keep boxelder bugs out?u003c/strongu003e
Seal cracks, fix weather-stripping, trim back branches, and remove outdoor hiding places. If they keep returning in large numbers, pest control services can help address the source.
