a friend told me he had good results in removing a wasps' home with an 
industrial vacuum cleaner. He borroughed (sp?) one from a do-it-yourself-
store, hold the pipe just in front of the intrance of the wasps' home, 
and all of them got out to see what was attacking, and -flup, flup, flup- 
it was almost empty. A good vacuum cleaner is strong enough to suck the 
wasps together with their home.
Ciao, Daniel.