The answer to 'carpenter ant scratching sounds' is that carpenter ants are a common pest that can cause scratching or rustling noises inside walls, floors, or ceilings. These noises are caused by the ants tunneling and excavating wood to build their nests. Carpenter ants do not actually eat the wood, but they can cause significant structural damage over time if left untreated.
Some common signs of a carpenter ant infestation besides the scratching sounds include seeing the ants themselves, finding piles of wood shavings, and noticing small holes or tunnels in wood. Carpenter ants are attracted to damp, rotting wood, so addressing any moisture issues in the home is an important first step in getting rid of them.