When I worked at a Burger King we got them in the drive through. Could sting a customer. We'd zap them with WASP-Freeze. Don't remember where the manager got it. Can kill if inhaled so be careful. Freezes tissue upon contact, like lungs. As for the bees in the dumpster, the guys would cover themselves with big, black plastic garbage bags, dump in the trash, and run like crazy. Karen E. Stober