Termites live underground in massive subterranean habitats that are always expanding. The worker termites search for food, usually in the form of wood, and bring it back to the colony. When termites find a steady source of food (your home), they’re going to want to stay awhile. They’ll construct tubes that are resistant to air and moisture and use them as highways from their colonies to your sources of wood. Even if you don’t have wood siding, they’ll find any wood products, such as floors, furniture, or even books to feed on.