I just addressed my yellowjacket problem. I paid $225 for guys to squirt powder poison into my walls.
When I put my ear up to the wall, I could hear the whole nest buzzing. It was very scary.
It took two shots at it to kill them.
They had to go, because they wanted in.
I tried killing them myself with a cheap wasp killer spray and only got stung as a result.
I'm not removing this light switch cover until I have replacement vacuum cleaner bags.