Don't agree.they loved my last house and I had a nest or 3 in the loft almost every year. I really hate them,I'm scared of them and I even got stung once by a very large Queen in January while I was asleep in bed!. There are sprays you can get but I'm nervous of chemicals.The french spray their houses in the countryside apparently quite often but no-one seems to do it here. Luckily I have now moved and don't have a problem,touch wood.
Talk to an expert pest controller if it happens again.
Good luck