As spring and fall temperatures shift in Missouri, homeowners often notice an increase in boxelder bugs clustering around windows, doors, and siding. While these pests are mostly a nuisance, their large numbers can be overwhelming, and their presence indoors is frustrating.
In this guide, we’ll explain:
✅ What attracts boxelder bugs to your home
✅ How to prevent and eliminate them
✅ When to call a professional pest control service
Let’s dive into why boxelder bugs are such a common problem in Missouri and the best ways to keep them out of your home.
What Attracts Boxelder Bugs to Your Missouri Home?
Boxelder bugs (Boisea trivittata) are named after their favorite food source—the boxelder tree. However, they also gather near certain conditions that make your home an attractive shelter.
1. Boxelder, Maple, and Ash Trees
Boxelder bugs primarily feed on boxelder tree seeds, but they also feed on soft maples and ash trees. If you have these trees near your home, your chances of dealing with these pests increase.
2. Warm, Sunny Surfaces
These pests love heat. They tend to gather on south- or west-facing walls where the sun keeps the surfaces warm. This is why you often see them swarming in large groups on the exterior of homes.
3. Small Cracks and Openings
In the fall, boxelder bugs seek shelter to overwinter indoors. They enter through:
- Gaps in doors and windows
- Cracks in siding or foundations
- Vents and chimneys
Once inside, they hide in walls, attics, and basements until spring.
4. Seasonal Migration
Boxelder bugs follow a predictable cycle:
- Spring/Summer – They live in trees, feeding and laying eggs.
- Fall – They look for warm spots and begin invading homes.
- Winter – They remain dormant indoors.
- Spring – They become active again, trying to return outdoors.
Because of this cycle, spring and fall are the most crucial times to prevent an infestation.
How to Get Rid of Boxelder Bugs
DIY Boxelder Bug Prevention
1. Seal Entry Points
Prevent boxelder bugs from getting inside by sealing:
✅ Cracks and gaps around windows and doors with caulk
✅ Holes in siding and foundation with sealant
✅ Vents and chimneys with fine mesh screens
This simple step keeps not only boxelder bugs but also other pests like stink bugs and ladybugs from entering your home.
2. Trim Trees and Reduce Their Habitat
- If practical, remove boxelder trees near your home.
- Regularly clean up fallen seeds and leaves around your yard.
3. Use a Vacuum for Immediate Removal
If you see boxelder bugs indoors, vacuum them up instead of squishing them (they can leave stains). Dispose of the vacuum bag immediately outside to prevent them from returning.
4. Use a DIY Soapy Water Spray
A simple homemade solution can kill boxelder bugs on contact:
- Mix 1 quart of water with 1-2 tablespoons of dish soap.
- Spray directly on clusters of bugs on your home’s exterior.
Professional Boxelder Bug Treatment in Missouri
If boxelder bugs keep returning year after year, it’s time to call the experts. STL Pest Control provides targeted treatments to eliminate and prevent these pests.
1. Exterior Barrier Treatments
We apply a residual insecticide treatment around your home’s:
✅ Foundation
✅ Doors and windows
✅ Siding and eaves
This creates a protective barrier that keeps boxelder bugs from entering.
2. Indoor Treatment for Severe Infestations
If you already have boxelder bugs inside, we use specialized treatments to:
- Flush them out of hiding spaces
- Prevent further indoor infestations
3. Year-Round Pest Protection
Boxelder bugs aren’t the only pests that invade St. Louis homes—stink bugs, ladybugs, and ants often show up, too. Our ongoing pest control services ensure your home stays pest-free all year long.
Final Thoughts: Don’t Let Boxelder Bugs Take Over!
Boxelder bugs may not be dangerous, but they can quickly become a nuisance when they invade in large numbers. The best way to protect your home is to seal entry points, remove attractants, and invest in professional pest control.
🔎 Need fast, effective boxelder bug treatment in Missouri?
Contact STL Pest Control today for expert solutions!
📞 Call Now: 314-833-6222
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