We have wasps constantly buzzing around our upstairs front windows trying to get in. I have stuck net up but if there is the tiniest gap they squeeze in, they are relentless. Once in they just buzz around on the inside of the window aimlessly. There doesn't appear to be a nest nearby, I have stood outside watching them, if they can't get in they eventually fly away, usually in different directions. We have had wasp's nests before and usually it's fairly obvious where they are, you see them coming and going at regular intervals. I think they look a bit thiner than regular wasps but dh doesn't agree. Anyone had similar before?