For the past 2 or 3 weeks I've had a problem with black wasps getting inside my house. This morning I killed wasp number 7. I have no idea how these wasps are getting in, but they always seem to be behind the blinds in my kitchen window. Once they come out in the open where I can reach them, I hit them with a fly swatter. That isn't enough to kill them so I have to quickly find something to crush them with, and I have to make a grinding motion...there's a lot of crunching noise. Fortunately, while all this is going on the wasps never try to go after me the way bees do. Now that I've been dealing with wasps, when I have to hit a fly that's sitting on my counter I end up dismembering it. I want to find a spray for outside that will kill all insects including the ones that usually crawl.