FORT MITCHELL, Ala. - Brian Province and Don Simmons have made money killing critters for a long time. When they got a call last month about an unusually large yellow jacket nest at 53 McLendon Road in Fort Mitchell, Ala., they expected something roughly the size of a license plate -- the biggest they had ever seen. What they found was a gray, papier-mâché-like mass the size of a car hood attached to the bottom of Annie Garvin's mobile home. That nest is only a few feet from a fig tree in her backyard. Garvin's mobile home -- one of...