The answer to carpenter ant trails is that they are a common sign of a carpenter ant infestation. Carpenter ants leave behind trails as they forage for food and moisture sources inside your home. These trails are made up of the scent markings they leave behind to help guide other ants back to the nest. Seeing these trails is an indication that you have an active carpenter ant colony somewhere in your home, likely in the walls, floors, or attic.
Carpenter ant trails can be challenging to eliminate on your own. While you can try DIY methods like sealing entry points and using ant baits, the best way to get rid of carpenter ants for good is to call in a professional pest control technician. They have the expertise and specialized tools to locate the main nest, treat it, and prevent the ants from returning.