Is there a set of guidelines to use to discourage these nasty buggers? We don't have flowering plants in our back yard, but always, always, at least 6 nests a year. They build near our doors, our window, on our deck, our BBQ, IN our dryer and hood vents...if only I could figure out what was ENcouraging them, I'd DIScourage them somehow! Or, alternately, is there a group of insects to encourage (hopefully, those that do not sting)that might prey on these guys? Our yard is already home to toads and lots of spiders--which we are happy to have around.