Pro tip: tack a brown paper bag up where the wasps make a nest. They'll think it's a hornets nest and fuck off.

You can also buy fake hornets nests to hang up, and they work really well. I put one up next to a rather large nest, and within 24h they were gone and had dismantled their nest completely

I've also heard that roach spray along where they build nests will deter them, but I dislike pesticides.