Carpenter ants are large black or bicolored insects that typically range from 1/4 to 1 inch in length. They are known for their ability to excavate wood to create nests, which can lead to structural damage in homes and buildings. Unlike termites, carpenter ants do not eat wood; instead, they remove it to create tunnels and galleries. These ants are social insects that live in colonies, which can consist of thousands of individuals. They are most active at night and are often found near sources of moisture. Carpenter ants can be identified by their smooth, rounded bodies and the presence of a single node between the thorax and abdomen.