Yellow Jackets are the worst, but I'm not happy with wasps in general. There is nothing worse than opening a door and stepping outside, only to be assaulted by pain on top of one's balding head. Is there a worse way to discover a large nest on the overhang right in front of the door? Still, the swarm of yellow jackets that came out of one of the little decorative plastic fenceposts when I was weeding the rock garden in front of the house, and bumped the plastic fence chain, is an event that I will remember for a long long time...