Carpenter ants in wood framing
moderate 1–3 h
Steps
- Watch at night: carpenter ants forage after dark, so sit quietly with a dim light near the frass or the kitchen and follow the workers back — the trail ends at the nest entry.
+5 more steps in the full guide
Stop and call a pro if
- the trail leads into a wall you cannot open or the frass keeps appearing after three weeks of bait
Rules in the US: Non-repellent termiticide-class liquids are restricted-use in many states; baits are what a homeowner may use.