Box Elder bugs inside house
Last summer we had a swarm of Box Elders on the west side of the house. I read that it's pointless to try to eradicate them with sprays because more will come along from the same tree site anyway. The best remedy was to seal any cracks around that general area so they can't get into the walls to spend the winter. Well they did anyway, and now that the weather is warming about two dozen a day have made their way into my family room for the last two weeks. It's getting worse every day. I've looked for their source of entry without success. Can I assume that they will eventually all come in to be caught or fly away outside? Or will they breed in my walls? Oh my. Any suggestions?