Carpenter Ants are among the largest ants found in the United States, ranging from ¼"-½" long. They are usually black. The queens are the largest ants in the colony and the workers in an established colony will be two sizes. The workers do all nest excavation, foraging for food, and care for the young. Carpenter Ants feed on sugar solutions from honey dew-producing insects such as: aphids, sweets and the juices they capture. They do not eat the wood they excavate from nests. Carpenter Ants may enter homes while foraging for food. However, the appearance of large number of winged adults inside a home indicates that the nest exists in the home. The workers will often expel fibrous sawdust from the nest through slit-like openings in the surface of the wood. These piles of sawdust are good signs to look for when trying to locate a colony in an infested structure.