Paper wasps build distinctive open, umbrella-shaped nests made of a papery material out of chewed wood fibers, usually tucked under eaves, deck railings, and shed overhangs. Colonies are smaller than those of hornets or yellow jackets, but the wasps will sting to defend the nest if disturbed.
Nests started in spring by a single queen grow through summer as workers emerge, then are abandoned in fall. Because reactions to stings can range from mild swelling to a serious allergic response, removing nests near doorways and high-traffic areas is best left to a professional with the right protective equipment.