Pest control · termites · updated Aug 2026
Signs of Termite Damage Every Homeowner Should Know
Termites cause billions of dollars in property damage across the U.S. every year, and most of it happens quietly, behind walls and under floors, long before it's visible. Catching the early signs is what makes the difference between a contained treatment and a costly repair.
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Why termite damage is easy to miss
Termites eat wood from the inside out, following the grain, which means a beam or wall stud can be structurally compromised while the surface still looks completely normal. By the time damage is obvious to the eye, an active colony has often been feeding for a year or more.
This is also why termite damage isn't something to diagnose or treat yourself. Confirming an active infestation usually requires probing wood, checking moisture-prone areas like crawl spaces and sill plates, and identifying the termite species involved, since drywood and subterranean termites are treated differently.
Warning signs to check for
Focus on the foundation, crawl space, attic, and any wood-to-soil contact points around the exterior of the home, these are where termites most commonly enter.
Mud tubes on the foundation
Subterranean termites, the most common and destructive type in the U.S., build pencil-width mud tubes along foundation walls to travel between the soil and the wood they're feeding on. Finding one is one of the clearest signs of an active infestation.
Wood that sounds hollow or papery when tapped
Termite-damaged wood is often eaten from the inside, so tapping it with a screwdriver handle can produce a hollow or dull sound compared to solid wood nearby, even though the surface looks intact.
Discarded wings near windowsills or light fixtures
When a termite colony matures, it releases winged, reproductive termites (swarmers) to start new colonies. These swarmers shed their wings shortly after landing, so small piles of uniform, translucent wings are a strong sign a colony is nearby.
Small piles of what looks like sawdust or pellets
Drywood termites push waste, called frass, out of small holes in the wood they're consuming. It looks similar to fine sawdust or tiny wood-colored pellets and often collects in small piles below the infested area.
Doors and windows that suddenly stick
Termite feeding and the moisture that comes with it can warp door and window frames, causing them to stick or become harder to open. This sign alone isn't conclusive, but combined with any of the others, it's worth an inspection.
Paint that looks bubbled or wood that appears water-damaged
Termite activity can create moisture patterns that mimic water damage, bubbling or peeling paint, or slightly sagging drywall or flooring, even when there's no actual leak.
Not sure if what you're seeing is termites?
A professional termite inspection can confirm whether it's an active infestation, an old one, or something else entirely, and most providers offer this as a free first step. Comparing options near you takes a couple of minutes.
See Local Pest Control OptionsCommon questions
How often should a home be inspected for termites?
Once a year is the general recommendation for most U.S. homes, and more often in regions with higher termite activity, such as the Southeast and Gulf Coast. Homes with a known history of termites or with crawl spaces are often inspected more frequently.
Does homeowners insurance cover termite damage?
Almost never. Termite damage is considered a preventable maintenance issue by most insurers, not a sudden or accidental event, so it's typically excluded from standard homeowners policies. This is part of why early detection matters financially, not just structurally.
Can I treat a small termite problem myself?
Store-bought termite products can kill the termites they directly contact, but they rarely reach or eliminate the full colony, which can be underground or spread across a wide area. Professional treatments (liquid barrier treatments or bait station systems) are built specifically to address the whole colony, not just the visible activity.