How Termites Find Their Way Into Your Home
Subterranean termites build nests in the ground and may make underground tunnels or above-ground "shelter tubes" of mud and debris to connect their nests to their food.
They can enter a building without direct wood contact by coming through such tubes in the soil. Termites can enter buildings through racks, The racks should be cracks. They can find their way into a structure through an opening as small as 1/32nd of an inch. Termites can infest any building, whether constructed with a slab, basement or crawl space foundation.