I might put up with the nest attempts in the vegetation or even the garage, but when they find little holes in the house to sneak into to build nests in the walls that is downright uncalled for. I had to spray one two nights ago and tonight there is no sign of the little buggers, but if experience tells me anything, they're not dead yet. Maybe I'll get lucky this time, but I figure I have only won the battle and not yet the war.
These little varmints are pretty impressive in their determination. One year I sealed in a nest that was built in an outside wall with that really thick plastic sheeting and some duck tape. I mean we're talking serious plastic here. I banged on the wall and they all flew out in a rage only to be trapped inside the plastic. Easy pickings to be squished by my barbecue flipper. No sports equipment for the wasps (regular readers will recall my penchant for dealing with rats using sports equipment such as hockey sticks and ski poles). I carried on this program of violent extermination for about a week. Then after a couple of days off I came outside to find they had chewed through the plastic. That's got to take some effort.
Another time we had a wasp nest in a hole in an outside wall. I wasn't too worried about it until we started to find wasps stranded and lost inside the house. About a dozen a day. I figured something was up and I looked in the closet and they had eaten a hole in the wood and were expanding their nest into the closet. Yikes!! No more mister nice guy after that.