Wasp nests have papery walls made from chewed wood pulp and saliva. Nests are usually found in sheltered areas with easy access to the outside. Common locations for wasp nests include wall cavities, roof spaces, eaves, bird boxes, sheds, and garages. To locate a wasp nest, observe the flight patterns of returning worker wasps. Identifying nests is easier during the summer months when the wasp population is higher.