Subterranean termites are often called silent destroyers because they can consume the structural wood in your Arizona home for months or years before any visible damage appears. By the time most homeowners notice something is wrong, the colony has already caused thousands of dollars in damage. The key to minimizing termite damage is knowing what to look for and inspecting your home regularly — especially in the spring and early summer when termite swarms signal that colonies are actively expanding. Arizona homeowners in Maricopa, Chandler, Mesa, Tempe, Gilbert, and Casa Grande should inspect their homes at least twice a year: once in March before swarm season begins, and once in September after the monsoon season ends.

8 Warning Signs of Subterranean Termites

The most reliable sign of subterranean termites is mud tubes — pencil-width tunnels constructed from soil, termite saliva, and wood particles that run along your foundation walls, plumbing pipes, floor joists, and any surface termites use to travel from the soil to the wood in your home. Mud tubes protect termites from desiccation and predators while they travel. Finding a mud tube — even an old, dry one — means termites have been active in that area and a professional inspection is warranted immediately. Other signs include hollow-sounding wood when tapped with a screwdriver handle, wood that appears blistered or darkened, bubbling or peeling paint on walls (caused by moisture from termite activity inside the wall), and floors that feel spongy or soft underfoot. Discarded wings near windowsills and doorways are a sign that a termite swarm has occurred inside or near your home — swarmers shed their wings immediately after landing, leaving small piles of translucent wings that are often mistaken for fish scales.

Prevention & Professional Treatment

If you find any of these signs, do not disturb the area — call a licensed pest control professional immediately. Disturbing mud tubes or termite-damaged wood can cause the colony to retreat deeper into the structure, making treatment more difficult. A professional inspection will identify the extent of the infestation, locate all active mud tubes and damage, and recommend the appropriate treatment. Pest Control Bros LLC provides free termite inspections throughout the Phoenix metro and Pinal County. Our technicians are trained to find termite activity that homeowners typically miss — including in crawl spaces, attics, and wall voids. Call (520) 424-5244 for a same-week inspection.