Subterranean Termites, the most destructive species of termites are found throughout the US and live in underground colonies or in secluded, moist areas above ground. Colonies can contain up to 2 million termites and are comprised of three categories; Workers, Soldiers & Reproductives. Their distinctive tunneling (called mud tubes) allows them to gain access to food sources and offer protection.
Drywood Termites, their colonies are located in the wood they eat and the colonies can have about 3000 termites. There can be several colonies in one structure. They destroy the wood by making galleries/chambers in the wood. Their fecal pellets are hard, elongated-oval, less the 1/25" in length with rounded ends and 6 concave sides.