Drywood vs Subterranean Termites in Ventura County
Pellets on the window sill or mud tubes on the foundation? The type of termite decides the treatment. We connect you with one independent local pest control company to confirm it.
Ventura County homes deal with two main kinds of termites. Drywood termites live entirely inside the wood they eat and need no contact with soil. Subterranean termites live in colonies in the soil and travel into a house through mud tubes or cracks. The signs, the risks, and the treatments are different, so the first step is figuring out which one you have.
How can I tell which termite I have?
| Sign | Drywood termites | Subterranean termites |
|---|---|---|
| Droppings | Small, hard, six-sided pellets that pile up like coarse sand or ground pepper | No loose pellets; they use droppings and soil to build tubes |
| Tubes | None | Pencil-width mud tubes on foundations, piers, pipes, or walls |
| Where they show up | Attics, eaves, window and door frames, furniture, wood trim, anywhere in the structure | Usually low: sill plates, crawl spaces, slab cracks, baseboards, wood touching soil |
| Damage look | Clean galleries across the grain, smooth inside | Galleries along the grain, packed with soil-like material |
When do termites swarm in Ventura County?
Swarmers are the winged termites that leave a colony to start new ones. In Southern California, the western subterranean termite commonly swarms in spring, often on a warm day after rain. Drywood termites commonly swarm in late summer and fall, often on sunny afternoons. Timing varies, and some swarms happen outside these windows. If you find wings on window sills or piles of wings near a light, save a few in a sealed bag for the inspector. The UC Statewide IPM Program has photos that help with identification.
Why does the type matter for treatment?
Drywood termites can be scattered through the structure in separate colonies, so the main decision is between whole-structure treatment (fumigation or, in some cases, whole-structure heat) and local or spot treatment of colonies that can be found and reached. Subterranean termites come from the soil, so treatment usually targets the soil around and under the home with liquid termiticides or a bait system, plus fixing the moisture and wood-to-soil contact that let them in. Fumigation is generally not used for subterranean termites. See fumigation vs local treatment.
Where is each type more common here?
Drywood termites are common in coastal Southern California, including much of the Ventura County coast and valleys, and they are often found in attics, eaves, and older wood trim. Subterranean termites are found across much of the county too, especially where wood meets moist soil: raised-floor homes with crawl spaces, homes with leaking irrigation near the foundation, and wood fences and planters against the house. Many homes can have both. An inspection is the only reliable way to know.
Other look-alikes
- Flying ants also swarm. Ants have a pinched waist, elbowed antennae, and front wings longer than hind wings. Termites have a thick waist, straight antennae, and equal-length wings.
- Wood-boring beetles leave round exit holes and fine powdery frass rather than hard pellets.
- Fungus damage (dry rot) causes cracked, crumbly wood where moisture stays high, with no insects at all. It is fixed by repairing the moisture problem and replacing the wood.
What can I do while I wait for an inspection?
- Don't spray store-bought insecticide into holes; it can scatter insects and make inspection harder.
- Sweep up pellets so you can tell if new ones appear, and note where.
- Fix leaks and move firewood, mulch, and stored wood away from the house.
- Keep sprinklers from soaking the foundation and wood siding.
Getting it confirmed
We pass your request to one independent local pest control company. Check its license at pestboard.ca.gov before any work begins, and ask for findings in writing. See termite inspection.
Frequently asked questions
Are termite pellets always drywood termites?
Hard, six-sided pellets are a classic drywood termite sign. Powdery frass usually points to beetles. An inspector can confirm by looking at the pellets and the wood.
Can a house have both drywood and subterranean termites?
Yes. They live differently, so a home can have both. Each type usually needs its own treatment plan.
Are flying termites dangerous?
Swarmers don't bite or sting, and they die soon after swarming indoors. They are a sign of a colony nearby, so it is worth getting an inspection.
Drywood vs Subterranean Termites help around Ventura County
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