Subterranean termites are part of the family Rhinotermitidae. With few exceptions, these termites require contact with the soil, which provides optimal temperatures and moisture for their survival. Subterranean termites build underground nests connected to aboveground food sources via mud tunnels.
These underground termites are responsible for the majority of termite damage to homes and buildings in the U.S. The most aggressive subterranean termites in the U.S. are the Formosan termites (Coptotermes formosanus). Each year, Americans spend an estimated $1 billion on combined control measures and repair costs associated with Formosan termites.
Signs of subterranean termite infestation
Large swarms of flying termites and the presence of mud tubes are the two most noticeable signs of subterranean termite infestations in homes. However, these signs can be difficult to detect. Annual termite inspections focusing on termite entry points and signs of activity are important to prevent damage.
Subterranean termite control
Because they infest homes from the ground level, it is easier to prevent subterranean termite infestations than drywood termite infestations. The most common control measures for subterranean termite infestations include treating infested areas (direct applications to the soil and damaged wood) with termiticides, and placing bait stations around the home.