Eastern subterranean termites are the species that matters in Ohio, and they are very good at not being seen. By the time most homeowners spot something, the colony has been working for a while. Here is what to look for before it gets that far.
1. Mud tubes on the foundation
The single most reliable sign. Pencil-width tunnels of soil and saliva running up the outside of the foundation, along basement walls, or across a crawl space pier. Termites build them to travel between the soil and your framing without drying out.
Check the foundation all the way around the house, especially where it is hidden — behind shrubs, under the deck, behind the downspouts. If you break a tube open and find pale insects inside, it is active.
2. Discarded wings near windows and doors
In spring, reproductive termites swarm, land, and shed their wings. Small piles of identical translucent wings on a windowsill, in a spider web, or around a basement light are a strong sign — often the first one a homeowner ever notices.
3. Swarmers indoors
Dark-bodied winged insects inside the house, usually in spring, usually near a window. People routinely mistake them for flying ants. The quick tell: a termite has a straight waist, straight antennae, and four wings all the same length. An ant has a pinched waist, elbowed antennae, and front wings longer than the back.
Swarmers indoors mean a colony is already established in or under the structure. That is not a wait-and-see situation.
4. Wood that sounds hollow
Termites eat wood from the inside, following the grain and leaving a thin shell. Tap along baseboards, door frames, floor joists and the sill plate with the handle of a screwdriver. A dull, papery, hollow sound where you expect a solid knock is worth a closer look.
5. Paint that bubbles or floors that sag
Damage inside wood shows up on the surface as bubbling or rippled paint, wallpaper that will not stay stuck, a floor with soft spots, or a door frame that has gone slightly out of square. These are also moisture symptoms — which is part of the problem, because moisture and termites travel together.
6. Frass, if it isn’t termites
Small piles of what looks like sawdust or coffee grounds usually point to carpenter ants or wood-boring beetles rather than subterranean termites. It is still a wood-destroying insect and still worth addressing — it just changes the treatment.
7. The conditions that invite them
Not damage, but risk. Worth fixing whether or not you have activity today:
- Soil or mulch piled against the siding, above the foundation line
- Firewood or lumber stacked against the house
- Downspouts dumping water at the foundation instead of away from it
- A crawl space with a dirt floor and no vapour barrier
- Wooden porch posts or deck supports set directly into the ground
- Old tree stumps or buried construction debris near the foundation
Where to look in a Dayton house specifically
A lot of housing stock here is older, with basements that have a finished section and an unfinished section. The unfinished side — the sill plate, the rim joist, the area behind the water heater — is where activity shows up first, because nobody looks there.
Crawl spaces are the other one. If your house has a crawl space you have not been under in a few years, that is the first place we check.
What to do if you find something
Don’t disturb it more than you have to — a broken mud tube tells us less than an intact one, and spraying a store-bought product on visible termites can push the colony to relocate without killing it.
Call us and we’ll come look. There is no charge for a homeowner inspection to determine whether you need treatment, and if you don’t, we will tell you that.
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Greater Dayton Pest & Rodent · 733 Salem Ave, Dayton OH 45406 · (937) 569-3330 · Ohio Department of Agriculture licensed, lic. #170858