I have wasps. Not tonnes, but on average, 6 or more a day. They tend to be in the kitchen and bathroom, sometimes trapped in the bathroom light-fitting. I suspect there may be a nest in my loft (2nd floor flat), but not sure. They have only been in my flat for the last 3 weeks.
I assumed they were coming in through the windows at night, as it has been warm, but last night I kept them shut, and found 6 this morning around the windows. Some on the floor, not in the best of health
Form what I have read, they build their nest for the Winter, and emerge in Spring, so why am I only seeing them now, towards the end of Summer?
Anyway, I have currently been whacking them with a newspaper, then flushing them down the loo. Some have got caught under my tall lamp and been cremated, which gives off an incredibly powerful smell, like sulphur.
Any ideas of how to approach this problem?