Signs of Termites in Your Ohio Home: What to Look For

Termites cause an estimated $5 billion in property damage across the United States every year — and most homeowners insurance policies don't cover it. In Ohio, subterranean termites are the primary threat, and they can silently feed on your home's structure for months or even years before you notice. Knowing the warning signs can save you thousands of dollars in repairs.

Here's what to look for, when to worry, and what to do if you suspect termite activity in your Ohio home.

Mud Tubes on Foundation Walls

This is the single most recognizable sign of subterranean termite activity. Mud tubes are pencil-width tunnels made of soil, wood particles, and termite saliva. They run along foundation walls, piers, floor joists, and other surfaces between the soil and the wood the termites are feeding on.

Subterranean termites need moisture to survive, and these tubes protect them from open air as they travel between their underground colony and your home. Check your foundation — both inside and outside — especially in crawl spaces, along basement walls, and around pipe penetrations. Tubes can also appear on interior walls if termites have found a path inside.

If you find a mud tube, don't disturb it. Breaking it open won't stop the colony — they'll simply build a new one. Instead, call a professional for an inspection.

Swarmers vs. Flying Ants

Every spring in Ohio — typically March through May — mature termite colonies release winged reproductive termites called swarmers. These flights often happen on warm days following rain, and homeowners frequently mistake them for flying ants.

Here's how to tell the difference:

• Wings: Termite swarmers have four wings of equal length that extend well past their body. Flying ants have two pairs of wings where the front pair is noticeably larger than the back pair.
• Body shape: Termites have a straight, thick waist. Ants have a pinched, narrow waist.
• Antennae: Termite antennae are straight or slightly curved. Ant antennae are distinctly elbowed.

If you see swarmers indoors — especially near windows, light fixtures, or in the basement — it likely means a colony is living in or very near your home's structure. Finding a handful near exterior lights doesn't necessarily mean your home is infested, but it does indicate that termites are active in the area and an inspection is worthwhile.

Discarded Wings

After swarming, termites shed their wings. You may find small piles of translucent, identical-length wings on windowsills, near door frames, in spider webs, or along baseboards. These are easy to overlook — they resemble tiny fish scales or flakes of mica. If you find wing piles indoors, especially in spring, treat it as a strong indicator of nearby termite activity.

Wood Damage and Hollow-Sounding Wood

Subterranean termites eat wood from the inside out, following the grain and consuming the soft springwood while leaving a thin outer shell. This means structural wood can be severely damaged while looking perfectly normal on the surface.

Try tapping exposed wood — door frames, window frames, baseboards, and support beams — with a screwdriver handle. Hollow or papery-sounding wood is a red flag. In advanced infestations, you may notice:

• Sagging or buckling floors
• Doors and windows that suddenly stick or won't close properly
• Visible maze-like patterns in exposed or broken wood
• Crumbling wood that falls apart when probed with a screwdriver

Pay special attention to wood that contacts or is near the ground: porch supports, deck posts, garage door frames, and basement window frames are common entry points.

Frass (Termite Droppings)

While drywood termites are rare in Ohio — they're more common in southern states — it's worth knowing about frass. Drywood termites push their droppings out of small holes near their tunnels, creating tiny piles of pellets that look like sawdust, salt, or pepper. Each pellet is about 1 millimeter long with six concave sides.

If you find frass in Ohio, it's worth having a professional identify the species. It's possible — though uncommon — for drywood termites to be transported into the state via infested furniture or lumber.

Spring Swarming Season in Ohio

Ohio falls squarely in the territory of the Eastern subterranean termite (Reticulitermes flavipes), the most common and destructive termite species in the eastern United States. Swarming season typically runs from late March through May, though warm spells in February or lingering activity into June aren't unusual.

Central and Southern Ohio — including Fairfield, Pickaway, Hocking, Ross, and Franklin counties — have soil and moisture conditions that termites thrive in. Homes built on slabs, with attached garages, or with earth-to-wood contact are at particular risk.

Why Homeowners Insurance Doesn't Cover Termite Damage

This catches many homeowners off guard. Standard homeowners insurance policies in Ohio exclude termite damage because insurers classify it as a maintenance issue — something that develops gradually and could have been prevented with regular inspection. Unlike a burst pipe or storm damage, termite damage accumulates over time.

This means the full cost of structural repair falls on the homeowner. Depending on the extent of the damage, repairs can range from a few hundred dollars for localized wood replacement to tens of thousands of dollars for foundation and structural work. Regular professional inspections are far cheaper than the alternative.

What to Do If You Suspect Termites

If you've noticed any of these signs, the most important thing is to act quickly. Termite colonies don't shrink on their own — they grow. A mature colony can contain hundreds of thousands of workers consuming wood around the clock.

A professional inspection will determine whether termites are active, identify the species, assess the extent of the damage, and recommend a treatment plan. Modern termite treatments — including liquid barriers and baiting systems — are highly effective when applied correctly.

M2 Exterminating provides termite inspections and treatment across Central and Southern Ohio. If you've seen mud tubes, swarmers, or any of the signs described above, call us at (740) 652-5292 for a thorough evaluation.