On warm, sunny spring or fall days, brown to brownish black winged insects, about 3/8 inch long, swarm in and around the house. These insects resemble flying ants but have thick waists and beaded rather than elbowed antennae. Their discarded wings may be found around the building. Mud tubes extend from the soil up along the foundation and any other termite-proof surface to the infested wooden structures. These tubes are commonly found in basements and crawlspaces under buildings. When broken off, they are rebuilt within several days. Dark or blistered areas may develop in the flooring.
These wood-feeding insects cause more structural damage to buildings than any other insect. If you suspect you have a termite infestation, get an accurate assessment from a professional termite or pest-control operator. They are qualified to treat termite infestations in the home. Discourage infestations by keeping the area under and around the house free of wood debris above and below the ground. If the soil around the foundation remains moist due to faulty plumbing or improper grade, repair the plumbing and alter the grade, since termites prefer moist soil.