Carpenter ant workers are about 1/4 – 1/2 inches long, dull black with reddish legs and golden hairs covering the abdomen. Queens are about 5/8+ inches long. Other color combinations of carpenter ants can be of red and black, or completely red or brown. Although carpenter ants do not sting, their bites can be quite painful, especially when they inject formic acid into the wound.
External indication of infestation from carpenter ants is usually indicated when there are is a presence of small openings on the surface of the wood. Here the workers will expel debris which consists of sawdust-like shavings and fragments of insulation and insect body parts. They prefer to a hollow out soften wood that is associated with moisture problems and fungus.