There are two main species of termites, subterranean and drywood. Subterranean termites live in colonies underground, while drywood live above ground. Both species are attracted to cellulose, which is found in wood and plants. While both types of termites are destructive, subterranean termites cause more damage, and are more common in the United States. The damage they cause can be devastating, and can destroy entire buildings. Drywood termites, on the other hand, are not common in the U.S., and when they do appear, they are typically only a problem in older homes.