Carpenter Ant Control That Finds the Nest

Carpenter Ant Control

Carpenter ants are the large black ants, a quarter inch to half an inch long, that homeowners notice walking along a countertop or a window sill in spring and early summer. Seeing a few indoors does not always mean the nest is inside. Workers travel a long way to forage, and a colony in a tree stump or a woodpile will send scouts through a house at night. Seeing many, or seeing winged ants indoors, is a stronger sign the colony is in the structure.

Carpenter ants do not eat wood. They excavate it to make galleries for the nest, and they push the debris out through small openings. That debris, called frass, looks like coarse sawdust and often contains bits of insect parts. A small pile of it below a window frame, a sill plate, a porch column or a crawl space joist is the sign worth taking seriously. Their galleries are smooth and clean inside, which is one way an inspection tells them apart from termite damage, where the galleries are packed with soil and mud.

What matters most is why the ants chose that wood. Carpenter ants nest in damp wood because it is softer to excavate. A colony in a sill plate means water has been reaching that sill plate for a while, from a roof edge, a window that does not shed water, or humid crawl space air under the floor. In our region, with red clay that holds water against foundations and long humid summers, wood near the ground stays wet longer than most homeowners expect.

Our approach starts with a free inspection with no obligation. A technician finds the nest, or the nests, since carpenter ants often keep a main colony outdoors and satellite colonies inside a house. We use non repellent products and baits that foraging workers carry back, so the treatment reaches the queen. Where the nest sits in a wall or a void, we inject it directly.

Then we tell you plainly what is keeping the wood wet. Treating the colony and leaving the moisture in place invites the next colony into the same board. Because we handle crawl space and moisture work with the same team, we can show you the source and explain the fix, and where the moisture has weakened framing, we can assess that too.