- The best time for inspection is at night when carpenter ants are actively foraging.
- Do not give up inspection just because you have located a single colony; there may in fact be several colonies throughout the structure.
- Prime areas for inspection include any wooden structures where high moisture content is present, including: window and door frames, tub and well enclosure walls, kitchen and bath plumbing walls.
- The use of a flashlight will aid in locating trails and other signs of carpenter ant damage.
- Bright flashlight
Where to Look For Carpenter Ants in the House
- Frass/Debris - As carpenter ants bore their nests, they leave behind several piles of fibrous, finely shredded sawdust-like material called "frass" which is made up of wood shavings, soil, and insect parts.
- Wood Damage- Look for smooth, clean galleries and small windows or slit-like openings in infested wood as a sign of nesting. These slits acts as "garbage chutes" used to dispose of frass and other materials.
- Trails - Carpenter ants form tight, closely associated trails that can be traced to the nesting area. Look for trails along carpet edges, door frames, fence tops, etc.
- Sounds - In some cases you can identify a potential nest site by tapping against it with a screwdriver with your ear placed to the wall. Alarmed Carpenter Ants will make a faint clicking or rustling sound.
Potential Indoor Nesting Sites:
- Wall Voids
- Attics (under roofing and insulation)
- Flooring and sub flooring
- Hollow doors
- Trash compactors
- Plumbing, pipe chases
Where to Look for Carpenter Ants Outside
- Stumps/ dead trees
- Landscape timbers
- Leaf litter, debris piles, mulch beds
- Door kick plates
- Window and door frames
- Utility entrances
- Trash containers