Their nests hide in tricky places like above the recessed lights in our covered walkway that goes to the garage or in tiny little spaces in a crack in the brick in the house. I try to watch them fly around when I see them so I can see where their little nest is hanging, and I've been fairly successful doing that. I found one on the back of a chair, behind a light fixture on the back patio right next to the door, and then even closer to the door the next day after we killed that one. They built one on the window behind our storage bin when we left the lid up for like 2 days. And they have a couple in the front of the house that are probably 30 feet high, so I have no idea what we'll do about those. These wasps are relentless, and I just for the life of me can't figure out why they don't build in the safety of one of the hundreds of trees in the areas beyond our property.
I've learned that you have to try to get all the adults when killing a nest otherwise a new nest will pop up within 24 hours. There have been tons in our garage because the inside is unfinished, and so I have to periodically go around and make sure they haven't built one sneakily behind something. I am on a mission and I always have the electric bug zapper with me when I"m sitting outside. I want them all gone, and I would much prefer the bees to fly around and polinate stuff, but they seem to be absent this year. I'm not sure if the two occurrences are related.
All I want is for my kids to be able to play outside without complete fear of being stung yet again. Is that really too much to ask? Apparently it is, so I guess I'll continue poisoning and electrocuting those pesky stingers.