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How to tell if termites are still active, and who can actually say

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Dead-looking evidence is not proof of dead termites. The only safe answer is an inspection.

Can you tell if termites are still active?

Not reliably. Some clues point towards live termites, but none of them proves a colony has gone. Termites hide inside timber and soil, so an empty-looking tube or a quiet wall tells you very little.

The honest answer is that activity is confirmed by a licensed inspector with the right tools. Your job is to notice, photograph and leave everything alone.

Clues that suggest activity

  • Fresh, damp mud on a tube or at a damaged edge, rather than dry, crumbling soil.
  • Soft, clean frass or pellets that reappear after you sweep them away.
  • Swarmers or loose wings in spring and summer, especially near a light or window sill.
  • Tapping or clicking from inside a wall or skirting board, which soldiers make when disturbed.
  • Timber that keeps getting worse: paint bubbling further, a floor softening more each month.

Clues that mislead you

Dry, brittle tubes look dead. They are not proof. Termites often abandon one route and open another nearby, so an old tube can sit beside a busy hidden gallery.

Likewise, a silent wall does not mean an empty one. Foraging comes and goes with temperature and moisture. Treat every sign as unresolved until someone qualified says otherwise.

Why testing it yourself backfires

The classic test is to break a tube and see whether workers come to repair it. Do not do this. A disturbed colony abandons the route and reappears somewhere concealed, which is exactly the outcome you want to avoid. It also destroys the evidence the inspector reads.

The same goes for drilling, prying or spraying. Why spraying termites yourself makes it worse explains the cost.

What an inspector can do that you can't

A timber pest inspector to AS 4349.3 uses moisture meters, sounding tools and sometimes thermal imaging or acoustic devices to look inside walls without opening them. They can also judge whether a tube is a live route or an old one. Thermal imaging is a screening aid, not proof, so a good report says what was and was not accessible.

What to do next

Photograph each sign with something in frame for scale, note the date and place, and touch nothing. Then book an inspection and hand over your photos. If you want a safe walk-through first, checking for termites yourself shows what you can look at without disturbing anything.

If you are still unsure what you found, early warning signs of termites helps you sort the likely from the unlikely. Treating anything is a job for a licensed pest management technician using an APVMA-registered product, never a shop-bought spray.

Frequently asked questions

If a mud tube is dry, are the termites gone?

Not necessarily. They may have moved to a hidden route nearby. A dry tube is an unconfirmed sign, so leave it intact and have it inspected.

Should I break a tube to see if it gets repaired?

No. Breaking it disturbs the colony and can push the feeding somewhere you cannot see. It also removes evidence the inspector needs.

How often should I have the house checked?

Standards Australia guidance and most state bodies point to a regular timber pest inspection, commonly yearly, with more often in high-risk areas. Your inspector can advise for your region.

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.

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