03/11/2026
Those box elder bugs covering your south-facing wall this week aren't moving in.
They're moving out.
They've been in your siding since October. They crawled into cracks around window frames, under siding edges, and behind shutters when the temperature dropped last fall. They've been dormant for five months. They didn't eat anything. They didn't breed. They didn't damage a single thing inside your walls.
This week the south side of your house warmed up enough to wake them. Now they're doing the only thing they came for — leaving. They're heading for the nearest box elder or maple tree where they'll spend the rest of the year eating seeds outside.
They don't eat fabric. They don't eat wood. They don't eat food. They don't bite or sting. They can't breed indoors. The only thing they leave behind is a faint orange stain if they're crushed.
If you do nothing, they're gone within a week.
🏡 How to handle the wall of bugs:
- Leave them alone and they'll clear out on their own as they migrate back to host trees
- If they're coming inside through gaps, a vacuum cleaner is the fastest removal — empty the bag outside so they disperse naturally
- Seal cracks around window frames and siding edges after they leave to prevent next October's entry — caulk is more effective than any spray
- A south-facing wall that warms up early is the exit point, not the entry point — the bugs you see in March are the last of them, not the first
The wall looks alarming for about a week. Then it's over. No treatment needed 🌿
