The fastest useful split
Termite frass remains distinct pellets; powderpost frass behaves like fine flour around tiny round exits.
Do not rely on a single color match. Start with scale and physical form, then check where the sign accumulates and whether a companion clue supports one candidate over the other.
| Feature | Drywood termite | Powderpost beetle |
|---|---|---|
| Debris | Discrete pellets | Fine powder |
| Hole | Kick-out point | Round exit hole |
| Uniformity | Uniform grains | Loose flour-like dust |
| Return | Pile below opening | Dust at hole edge |
Photograph debris against a dark card and measure the opening.
Fresh structural activity merits qualified inspection.
Open safety guidanceCheck each full evidence profile
Drywood termite
Kalotermitidae
Uniform hard pellets in small piles directly below tiny wood openings, often recurring after cleanup.
Powderpost beetle
Lyctinae and related groups
Tiny round holes with flour-like powder accumulating below unfinished or stored wood.
Why a visual match can fail
Scale can be distorted by a close-up photograph, loose material may be moved by cleaning or airflow, and old evidence can change color or texture. A reliable conclusion uses multiple observations that point in the same direction and preserves contradictory details instead of forcing a match.