There is a wasps' nest over the back door of the neighbours' house. I managed to bump into neighbour in the street and asked if they knew it was there? He said Oh dear, and I said that I'd had one on my side a couple of years ago and called the council and I think they will shift it FOC. Well that was last week and the wasps are still there, having little waspy raves and buzzing round the garden. How long should I leave it before asking them nicely to deal with it?