Termites: The Damage You Don't See Until It's Expensive

Termites are the rare pest where the stakes are financial before they’re emotional. They don’t bite, don’t spread disease, and you may never see one — but subterranean termites damage on the order of 600,000 U.S. homes a year, the repair bill runs into the billions, and homeowners insurance almost universally excludes it as “preventable.” Everything about managing termites follows from one fact: they work invisibly, from the inside of the wood outward, often for years before discovery.

Know your enemy: the subterranean termite

Across most of the country, the termite that matters is the eastern subterranean termite. The colony lives in the soil — not in your house — and can number in the hundreds of thousands. Workers travel from soil to wood through foundation gaps, expansion-joint cracks, plumbing penetrations, and the mud tubes they build up foundation walls; they need moisture, which is why they commute back to damp ground and why moisture problems around a foundation raise risk so sharply.

They eat cellulose: framing, sill plates, subfloors, but also cardboard boxes in the crawl space, buried construction scrap, stumps, and mulch. To a colony, your house is simply the largest piece of dead wood in the neighborhood.

The signs that matter

• Mud tubes. Pencil-width tunnels of soil climbing foundation walls, piers, or crawl-space supports — the single most reliable evidence. Break a section open; if it’s repaired within days, the colony is active.
• Swarmers and wings. Once a colony matures, it releases winged reproductives — usually on a warm day after rain, most often in spring. A swarm inside the house, or piles of identical shed wings at windowsills, is near-certain evidence of an established colony in or under the structure.
• Hollow or blistered wood. Termites eat along the grain, leaving a thin painted shell. Wood that sounds papery when tapped, or paint that bubbles and ripples for no moisture reason, deserves a screwdriver test — gently probe, and if it gives way to reveal layered galleries packed with dried mud, you’ve found them.
• Stuck doors and sagging floors in advanced cases — though plenty of other things cause these, which is why evidence-gathering beats guessing.

What you will not usually see: termites themselves. Workers are pale, soft-bodied, and die quickly in open air. No visible insects means nothing either way.

Why DIY doesn’t apply here

Termites are the least DIY-appropriate pest in the house. The colony is in the soil, potentially dozens of feet away; the treatments that work — continuous liquid soil barriers with non-repellent chemistry — require trenching, precise application volumes, and sometimes drilling through slabs; and a partial job is worse than none, because it funnels foraging termites through the gaps while convincing you the problem is handled. Even monitoring is a trained-eye task: the difference between old damage and active infestation changes everything about the response.

This is also the pest where “spray what you see” fails most completely. Killing a few hundred workers at a mud tube means nothing to a colony of 300,000 with a queen laying continuously.

What professional protection looks like

A proper program — like our termite control service — has three parts. Inspection: foundation, crawl space, sills, plumbing penetrations, moisture conditions, and the yard’s wood-to-soil story, with findings shown to you, not just asserted. Treatment where activity or high risk exists: a continuous treated zone in the soil around the foundation, plus targeted work on active galleries. Modern non-repellent termiticides are a genuine advance — termites can’t detect them, tunnel through freely, and transfer the material through the colony. Verification: annual re-inspection, because soil disturbance, landscaping, and time all erode any treatment, and because termite pressure is permanent even when the protection isn’t.

Prevention every homeowner controls

• Keep wood off soil: no siding, deck posts, or stored lumber touching ground; six inches of visible foundation is the goal.
• Move moisture away: working gutters, downspout extensions, graded soil, no chronic irrigation against the slab.
• Don’t feed them: remove stumps and buried scrap; keep mulch thin and pulled back from the foundation; never stack firewood against the house.
• Ventilate crawl spaces and fix leaks — damp wood is the invitation.

None of this substitutes for inspection; it just lowers the odds. In heavy-pressure regions — most of the South — the honest framing is that termite protection is a standing cost of homeownership, like the roof. It’s dramatically cheaper than being the house they found first.