I was aware of this, in a general sort of way, which was why I was looking for a humane solution.
However my sympathy level for wasps was badly dented as a result of this evening's cycle ride.
Several miles out of York a wasp collided with my throat, dropped down into my unzipped top, and then stung me on the chest. It then proceeded to fly around inside my top until I could stop, and strip off my top in front of some rather startled passers by. Even though that was several hours ago the area where I was stung is still throbbing.
I just hope it went on to do something beneficial.