🔧 Treatment Guide
Both are nuisance-only invaders requiring identical treatment: perimeter spray with bifenthrin in September before they enter, followed by sealing all entry points. Neither is medically dangerous.
💡 Confirm before treating: Misidentification is common with these two species. Capture a specimen and compare against the table above before purchasing any products.
❓ Identification FAQ
Do I need different products to treat each one?
No. Both boxelder bugs and brown marmorated stink bugs respond to the same treatment: bifenthrin or permethrin perimeter spray applied in September, before they seek entry points. Seal gaps around windows, doors, and utility penetrations for lasting prevention.
Why do they both invade homes in fall?
Both species are seeking warmth for overwintering. They're attracted to sun-warmed south and west-facing walls. Neither breeds indoors — they're just sheltering and will exit in spring. Vacuuming is the best indoor control once they're inside.
What's the fastest way to confirm which pest I have?
Capture a live or dead specimen and compare it directly against the identification features in this guide. A clear close-up photo submitted to your county's cooperative extension service will get you a free expert identification within 1–3 business days. iNaturalist is also excellent for invertebrate ID.
Can I treat for both at the same time?
If you're unsure which pest you have, it's often more effective to wait for confirmation rather than applying multiple treatments. Misapplied pesticides can scatter populations without eliminating them. The exception: if both pests require identical treatment (as with many fall invaders), treating once covers both.
