What Are Carpenter Ants?
Carpenter ants (Camponotus spp.) are among the largest ants in North Carolina, with workers measuring 6–13 mm long. They are typically black, though some species may be reddish or bicolored. Unlike termites, carpenter ants do not eat wood—they excavate it to create smooth, galleries for their nests.
Habitat & Behavior
These ants prefer moist, decaying wood but will extend their tunneling into sound wood as colonies grow. Common nesting sites include porch pillars, roofing, windowsills, dead trees, and any wood in contact with soil. Parent colonies outdoors often establish satellite colonies inside structures.
A mature carpenter ant colony can contain over 10,000 workers and cause significant structural damage over time. Signs of infestation include small piles of sawdust-like frass, faint rustling sounds within walls, and large winged ants emerging indoors during spring.
Prevention & Control
Carpenter ant control requires locating and treating both the parent and satellite colonies. Moisture management is critical—repair leaky pipes, replace water-damaged wood, and ensure proper drainage around your foundation. Professional inspection is recommended, as colonies can be hidden deep within structural timbers.