This is one of the most destructive termites worldwide, due in part to the enormous colony size, which may be hundreds of thousands of workers. A single colony may forage over a radius of several hundred feet. While these are “subterranean” termites it is common to find aerial nests with no ground connection, as the colony is able to find moisture and building materials in buildings. They construct a very hard matrix called “carton” in which to live, made from cellulose and saliva. Swarming is in early evening, usually following rainfall, and alates are attracted to lights in large numbers.
Aerial colonies may need to be controlled with fumigation of the structure. Soil nesting colonies are controlled with soil pretreatments and with post-construction applications of residual insecticides. Bait products also have provided highly effective results, possibly leading to the elimination of entire colonies. Control of excessive moisture situations within structures will reduce the attraction to the termites.