Dry Mud Tubes on the Foundation
Another sign that termites are munching away at your walls is the discovery of small, dry mud tubes on the foundation, running from the ground to the siding. Termites are subterranean critters, and they prefer to remain covered as they travel back and forth from their nest in the soil to their “restaurant” in your house.
To conceal their comings and goings, they build small tunnels (about 1/4 inch wide). They can build these mud tubes on the outside of your foundation or on the inside, so if you have a crawl space, shine a bright flashlight in the crevice and check for tubes once or twice a year.
