Termite evidence: what actually counts as proof of activity
Not every clue means the same thing. Some show that termites exist, some show that they are active, and only an inspector can tell which you have.
What counts as termite evidence?
Termite evidence is any physical trace that points to white ants feeding in or near a building. It falls into four groups: the insects themselves, the structures they build, the waste they leave and the damage they cause.
That list is short, but the strength of each clue varies a lot. A single discarded wing and a live mud tube are not the same thing, and treating them alike leads to either panic or complacency.
How strong is each clue?
This table ranks the common clues by what they can tell you. None of them identifies a species, and none replaces an inspection.
| Evidence | What it suggests | How much weight it carries |
|---|---|---|
| Live workers or soldiers in timber | An active colony right there | Strong. Photograph, do not disturb |
| Mud tubes on a wall or slab edge | A concealed travel route | Strong, though an old tube may be abandoned |
| Swarming alates indoors | A mature colony nearby | Strong, but the nest may be outside |
| Discarded wings | A swarm has happened | Moderate. Says nothing about where the nest is |
| Frass pellets | Feeding, though often drywood types | Moderate |
| Hollow-sounding timber | Internal loss of wood | Moderate. Rot and borers do the same |
| Stuck doors, bubbling paint | Moisture or movement | Weak on its own |
Your own mud tube or droppings find is worth reading in the context of this table, not in isolation.
Evidence of termites is not evidence of activity
This is the distinction that matters most. Old tubes, dry wings and empty galleries can all be left behind long after the colony has moved or died. A clue shows that termites were there, not that they are there now.
Telling the difference takes tools and training. Inspectors use moisture meters, sounding tools and thermal cameras. You should not attempt that yourself, which is why checking whether termites are still active is a job for the inspector.
Why you photograph, not collect
A good photo is the best thing you can hand over. Shoot a wide view for location, then a close one with something for scale, such as a coin. Add the date to your notes.
Do not scrape samples into a jar or lift a tube. Doing so destroys the pattern the inspector reads, and it may disturb the colony.
What not to do
- Do not poke, drill or cut into the timber to see how far it goes. That opens the galleries.
- Do not spray anything. No surface spray, no bug bomb, no home remedy.
- Do not break a mud tube to see what is behind it.
- Do not patch and repaint. Cosmetic repair hides live evidence.
A disturbed colony abandons the route and comes back somewhere concealed, so the feeding carries on where nobody is looking. Why spraying termites yourself makes it worse covers the rest of the cost.
What to do instead
Photograph what you found, note the place and the date, and book a timber pest inspection carried out to AS 4349.3. Tell the inspector exactly what you saw and where. What a termite inspection covers explains what they can and cannot see.
Frequently asked questions
What is the strongest evidence of termites?
Live termites in timber, or an intact mud tube that is still being used. Both show current activity, though an inspector has to confirm it.
Is one discarded wing enough to worry about?
A single wing shows that a swarm happened nearby, not that your house is infested. Several wings gathered at a window or light, plus another sign, is a good reason to book an inspection.
Can I keep a termite sample for the inspector?
It is better to photograph it where it is. Collecting samples or breaking tubes disturbs the colony and removes the pattern an inspector reads.
Sources
What this page explains is based on these official sources. If you check one and it does not match what you read here, send it to us and the article gets corrected.
- Department of Health, Victoria. Pest control — termites
- Queensland Building and Construction Commission. Protect against termites — termite management systems and inspections
- Standards Australia. Australian Standards (AS 3660 termite management, AS 4349.3 timber pest inspection)