Boxelder bugs, (Boisea trivittatis), congregate in large numbers on the sides of homes and buildings to sun themselves. Populations explode after a number of warmer than usual winters becoming a nuisance to homeowners by their sheer numbers. There are few natural predators of these relatively harmless bugs and even fewer that homeowners want in their yards. Rodents, a limited number of other insects and a few bird species will eat boxelder bugs but there are a number of other control methods ...