The answer to 'why is my carpenter ant trails' is that carpenter ants are a common pest that build nests and forage for food, leaving behind distinct trails. Carpenter ants are attracted to moist, decaying wood and may establish nests in the walls, floors, or other structural elements of your home. Their trails are created as they travel between the nest and food sources, leaving behind a pheromone scent that other ants can follow.
Seeing carpenter ant trails is an early sign of an infestation. If left untreated, the ants can cause significant damage to your home's wood structures over time. The best solution is to identify and eliminate the nest, which may require the help of a professional pest control technician. DIY methods like baits and sprays can temporarily disrupt the trails, but a full-scale extermination is often necessary to fully remove the colony.