Signs of Termites: Pellets, Wings, Mud Tubes & Wood Damage
The strongest termite warning signs are not all the same: hard pellets can point toward drywood termites, mud tubes are strongly associated with subterranean termites, and swarmers or discarded wings can indicate a nearby reproductive event. Wood damage matters too, but no single sign shows the full extent of an infestation.
At a glance
Use these points as a starting checklist, then read the sections below for the context and exceptions.
- Drywood termite pellets and kick-out holes: Drywood termites live inside wood and can expel hard fecal pellets through tiny openings.
- Swarmers and discarded wings: Winged reproductive termites leave established colonies to mate and start new colonies.
- Mud or shelter tubes: UC IPM describes shelter tubes as one of the most common signs of subterranean termites.
Drywood termite pellets and kick-out holes
Drywood termites live inside wood and can expel hard fecal pellets through tiny openings. Small piles directly below wood are more meaningful when the material is uniform and repeatedly returns. See termite pellets vs sawdust for the main lookalikes.
Swarmers and discarded wings
Winged reproductive termites leave established colonies to mate and start new colonies. Indoors, a cluster of swarmers or many equal-length discarded wings around windows, doors or lights deserves inspection. Flying ants can look similar, so compare waist shape, antennae and wing proportions before assuming termites.
Mud or shelter tubes
UC IPM describes shelter tubes as one of the most common signs of subterranean termites. Tubes can cross foundation surfaces or other gaps while protecting termites traveling between soil and wood. A tube can be old or active, so the surrounding structure still needs inspection.
Wood damage and hollow areas
Termite-damaged wood may look blistered, thin at the surface or structurally changed. Do not probe load-bearing components or treat damage as cosmetic. Visible damage can show where feeding occurred, but hidden galleries may extend beyond the area you can see.
What signs cannot tell you
Visible evidence cannot reliably determine the total number of colonies, whether every hidden area is active or which treatment scope is appropriate. That is why termite inspection and termite treatment remain separate decisions.
Frequently asked questions
Do discarded wings always mean termites?
No. Winged ants also shed wings. Body shape, antennae and wing proportions help separate them.
Can termites be present without visible signs?
Yes. Both drywood and subterranean termites can remain hidden for long periods.
Does damaged wood mean fumigation is required?
No. Treatment depends on termite type, extent, accessibility and inspection findings—not damage alone.
Related guides and services
Call to describe the pest signs you are seeing, or use the service request form.
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