After a lot of time I found something for wasps by accident. It's called a "Waspinator" and it works pretty well.
I'll see one buzzing around sometimes but no more nests.
It sounds goofy but if you Google Waspinator you can read it for yourself.
It's a gray bag that you can put some plastic bags in to puff it up. When it's hanging it looks like a big wasp nest and I guess they are territorial and won't nest if they sense another nest already there. Anyway, it seems to have kept them from homesteading:-)
The link is
http://www.homedepot.com/h_d1/N-5yc1v/R ... key=SearchThis was the only place where I could order just one and after a week in place it seems to have driven the little buggers off:-)