The principal food source of termites is cellulose, obtained from wood and other plant products. Termites can feed on wooden buildings, utility poles, fence posts, etc.
Termites also feed on paper, fiberboard, including books, newspapers and fabrics.
These earthen tubes are built by the termites to prevent them from the drying effects of air. Always look for discarded termite wings near doors or windows since they are attracted to light. If you suspect termites, call a certified professional pest control company who will do an inspection and verify termite infestation. Termites can be found throughout the United States. Although several species of termites occur in the U.s., most damage is caused by the subterranean species.