You know what else is even better for wasps? A shop vac!

They don't survive the trip through the hose. Often you can get the nest, too, although some might survive inside.

If you have ground wasps (which are the worst because they chase you until they get you!), you just lay the big end of the pipe next to their hole for a few minutes, morning and evening, until you have got them all.

So, in answer to the original question: a shop vac!