Carpenter Ant Exterminator
Near YouStructural Damage Assessment · Colony Location · Dust Injection · Prevention

Both damage wood, but differently. Termites eat wood — they consume the cellulose inside, leaving mud-lined galleries and the wood's outer surface intact. Carpenter ants excavate clean, smooth galleries in moist wood but do not eat it — they remove the wood in frass. Termite damage has soil mixed in; carpenter ant galleries are clean and smooth. Termites rarely appear above ground; carpenter ants are often seen foraging. If in doubt, collect a sample and call — misidentifying the pest leads to ineffective treatment.

Carpenter ant colonies swarm reproductively in spring (April-June in most regions), which is when you most often see winged swarmers indoors. Worker ants forage year-round but are most visible in warmer months. Seeing large numbers of carpenter ants in winter, emerging from inside walls or outlets, typically indicates a mature satellite colony that has been established for 3-6+ years and is extremely active.

Carpenter ant damage ranges from cosmetic to severe depending on how long the colony has been active. A small, recently established satellite colony may cause minimal damage. A large colony active for 5-10 years can compromise structural integrity of floor joists, wall studs, and window framing — particularly in areas of sustained moisture damage where the wood has been softened. Your exterminator assesses the damage during treatment and advises whether a structural contractor should be consulted.

Carpenter ant reinfestation after treatment usually means either the outdoor parent colony was not treated (it continues producing satellite colonies), a new moisture source has created new conditions, the original treatment missed the satellite colony location, or a new satellite colony has entered from a different point. A follow-up inspection identifies which situation applies and what additional treatment is needed.

You can sometimes locate the satellite colony entry point by following an indoor ant trail — worker ants return to the nest after foraging. Trails often lead to a wall void access point near a moisture-damaged area. However, locating the nest precisely enough for effective treatment — and identifying the outdoor parent colony — typically requires experience and inspection tools that professionals have. Knowing the approximate area helps the exterminator focus the inspection.