While I was out gardening, I saw a wasp fly through a small hole beside my basement window and into my basement. Then later, I saw five more enter through two other holes (two in part of my AC, three in my fireplace exhaust area.)
The exhaust area looks like this, but with four small holes in the metal plates where it attaches to the wall. That's where the wasps go in.
I taped up the basement hole as a temporary stop-gap. My questions are:
- What should I use as a permanent seal?
- Should I seal all the wasp entrance holes?
More importantly, what do they want and how do I get rid of them? I assume there's something in the house (food or a nest) that they're after. I can't find it, and don't know how to look for it.
I would like prevention (no more wasps coming) over protection (spraying all the entrance holes with bug killer) if possible.