I had good luck with starting fluid, ether. Puts the sobs to sleep. If the nest is removable, spray it down and when they sleep, toss into garbage can... then watch the garbagemen boogie when they pop the lid and the bees/wasps awake...with an attitude! (Should wrap it in secure bag first)

One of the deadliest things I ever saw used on a nest of ground bees was muratic acid. The guy took a long pipe and placed the end of it at the hole opening and then poured the acid in the other (raised) end of the pipe. That really did the trick on that nest. NOTHING lived through it. I absolutely HATE with a passion all forms of bees, wasps, & hornets so Im really enjoying the posts here. Good luck.

Oh yeah.........for the guys in the house....try pepper spray. Stuff worked wonders on an unwanted squirrel in my brothers house.