We've recently had an invasion of paper wasps (I think) in our backyard. We noticed them swarming about a month ago so we had an exterminator come out and take down a couple of nests we'd seen, and it seemed to solve the problem. But then today I was about to go outside and I saw that there were dozens of them flying around again. We don't know of any other nests, and they don't seem to be hanging around in any one place, so I have no idea what they're after. Have any of you had this happen? How do you get rid of them? It's a bummer to not be able to go outside.