The answer to 'why is my carpenter ant droppings' is that carpenter ants create piles of sawdust-like droppings as they build their nests and tunnels inside wood. These droppings are a clear sign of an active carpenter ant infestation in your home. Carpenter ants don't actually eat the wood, but they excavate it to create their nests, leaving behind these piles of wood debris.
Carpenter ant infestations can cause significant structural damage to your home over time if left untreated. The droppings are just one symptom - you may also notice rustling or clicking sounds coming from the walls, as well as small entry holes where the ants are coming and going. If you spot these signs, it's important to take action quickly to control the infestation before it gets worse.