You’ve found active termites — here’s exactly what to do.
Live termites in a Top End home are an urgent problem, not a next-month problem. The single most important thing is the one most people get wrong: do not disturb them and do not spray them. Read this first, then call us — in Darwin’s extreme-pressure environment, the difference of a week genuinely matters.
The first rule: do not disturb them.
Why disturbing termites makes everything worse.
The instinct when you see termites pouring out of a skirting board or find them in a door frame is to spray them with whatever is under the sink, or to break open the mud to see how bad it is. Both are the worst possible move. Modern termite treatment — whether Termidor SC chemical soil treatment or Sentricon baiting — works because undisturbed foraging termites pick up the active ingredient and carry it back to the nest, transferring it through the colony until the colony collapses.
If you spray a contact insecticide, you kill the foragers in that one spot and drive the rest away. The colony detects the disturbance, abandons that gallery, and simply re-routes through another part of the structure — often somewhere you cannot see. You have not killed the colony. You have made it harder to find, harder to treat, and given it a reason to spread. The same applies to knocking down workings or breaking open mud leads.
What to do instead — the five steps.
- Leave the termites and their workings completely alone. No spray, no poking, no breaking the mud, no knocking down leads or nests.
- Photograph what you can see without touching it. A few clear photos help the technician triage species and urgency before arrival.
- Restrict access to the area. Keep pets and children away, and stop using that room/cupboard if practical so the workings stay intact.
- Do not patch, paint or repair anything. Covering damage hides the evidence the technician and your insurer need (see our warranty and insurance guide).
- Call a licensed NT pest contractor for an urgent inspection and say clearly that you have found live termites so it is prioritised.
Why active termites in Darwin are genuinely urgent.
This is the worst termite environment in Australia.
In southern capitals, finding termites is serious but you usually have weeks of breathing room. In the Top End you do not, for two reasons: the species, and the climate. Darwin’s warm, humid wet/dry cycle keeps termite colonies active and foraging far more of the year than temperate Australia, so damage accumulates faster.
And then there is Mastotermes darwiniensis, the Giant Northern Termite — found only in northern Australia, with massive colonies, an appetite that extends beyond timber to rubber, plastic, leather and even soft metals, and a reputation as the single most destructive termite in the country. A Mastotermes colony into a Darwin home is the most serious termite scenario in Australia, full stop.
A realistic timeline — what waiting costs.
The financial logic of acting fast is stark. Consider a Coptotermes infestation into a standard Darwin home found at the skirting boards:
- Found and treated at ~month 2: Colony elimination plus minor timber replacement — treatment $3,200–$6,500, repairs often under $3,000.
- Found at ~month 8–10 (typical when ignored): Same treatment cost, but structural timber — bearers, joists, frame members — now compromised. Repair bills of $15,000–$60,000+ are common, and with Mastotermes the upper figure goes higher.
The treatment cost barely changes. The repair cost is where delay hurts, and most home insurance policies in the NT specifically exclude termite damage — so that repair bill usually falls entirely on the owner. See our treatment cost guide for the full pricing breakdown and our warranty and insurance guide for why the exclusion matters so much here.
What happens when we arrive.
Species ID, extent mapping, then a plan.
An urgent active-termite inspection is not the same as a routine annual check. The priorities are different and the order matters:
- Confirm the species. Mastotermes, Coptotermes acinaciformis and Schedorhinotermes are treated differently. Species is established from the soldiers and workings at the active site — which is exactly why you must not destroy that site before we get there.
- Map the extent. We trace workings, use moisture and movement detection where needed, and inspect the sub-floor, roof void and perimeter to understand how far the colony has reached.
- Choose the treatment path. Directed treatment at the active site to hit the colony, plus a perimeter strategy — chemical soil barrier or baiting — appropriate to the species and the building. Compare the two on our Termidor vs Sentricon guide.
- Written plan and quote. Clear scope, what is treated, what the warranty covers, and a separate note on any structural assessment needed once the colony is confirmed eliminated.
One thing we will not do is quote treatment over the phone from a photo. The species and the extent drive the price and the method, and getting that wrong wastes your money. The inspection comes first, always.
After the colony is gone.
Colony elimination stops further damage but does not undo damage already done. Once activity is confirmed eliminated, a structural assessment establishes which timbers need replacing, and a renewed protective barrier is installed so the building is covered going forward. Then ongoing annual AS 3660.2 inspections keep it that way — in this environment, a one-off treatment without ongoing monitoring is a false economy. It is also worth fixing the conducive conditions that helped the colony in so a new one does not follow.
Common mistakes that cost Darwin homeowners.
What we see go wrong — and what it costs.
- “I sprayed them, they’re gone.” The visible foragers are gone; the colony re-routed and is still eating the house elsewhere. You have lost the easy treatment opportunity and bought weeks of hidden damage.
- “I knocked the mud down to see how bad it was.” The colony abandons disturbed galleries and the technician can no longer confidently identify species and entry points from that site.
- “I’ll book it in after the wet.” Months of unchecked feeding in the most destructive termite environment in Australia. The treatment costs the same later; the repairs do not.
- “I patched and painted over the damaged architrave.” Hidden damage means an inaccurate scope and, where any cover exists, a weaker insurance position.
- “A cheap operator said he’d treat it today, no inspection.” Treatment without species ID and extent mapping frequently misses the colony entirely — you pay, the termites continue, and you find out months later.
If any of these has already happened, it is not too late — tell us exactly what was done when you call, and we work from there. The worst outcome is doing nothing further.
Frequently asked questions.
I found live termites in my Darwin home — what should I do right now?
Do not disturb them. Do not spray them with fly spray, do not break open the mud or galleries, and do not knock down the workings. Disturbed termites abandon that area and re-route through the building, making the colony harder to find and treat and often spreading the damage. Photograph what you can see without touching it, close the area off from pets and kids, and call a licensed NT pest contractor for an urgent same-day or next-day inspection. In Darwin’s extreme-pressure environment — especially if it is Mastotermes — days matter.
Why must I not spray or disturb active termites before treatment?
Modern colony-elimination treatments (Termidor SC, Sentricon Always Active) rely on undisturbed termites carrying the active ingredient back to the nest and transferring it through the colony. If you spray a contact insecticide or smash the workings, the foraging termites in that zone are killed or driven off, the transfer pathway is broken, and the colony simply re-routes to another part of the structure. You lose the single best opportunity to eliminate the colony, and the technician can no longer use the active site to identify species and entry points.
How fast can a Mastotermes or Coptotermes colony damage a Darwin home?
Faster than almost anywhere else in Australia. Coptotermes acinaciformis can write off structural timbers in 6–12 months once established. Mastotermes darwiniensis — the Giant Northern Termite, found only in the Top End and the most destructive termite in Australia — has enormous colonies, eats almost any cellulose plus rubber, plastic and soft metals, and can cause severe structural loss in a matter of months. That is why active termites in Darwin are an urgent problem, not a ‘book it in next month’ problem.
Will treating the termites I found stop all the damage?
Treatment eliminates the colony and stops further damage, but it does not repair timber that is already eaten. After colony elimination is confirmed, a separate structural assessment establishes what timber needs replacing. This is why early action matters financially: a colony found and treated in month two costs far less in repairs than the same colony found at month ten. It is also why you should never paint over or patch suspected termite damage before an inspection — it hides the evidence the technician and your insurer need.
Do you offer urgent termite call-outs across Greater Darwin?
Yes. Active termite finds are prioritised for same-day or next-day inspection across the City of Darwin, Palmerston and the Litchfield rural area — Casuarina, Nightcliff, Marrara, Howard Springs and Humpty Doo included. We confirm species, map the extent, and give you a clear treatment plan and written quote. Call 0485 939 966 and tell us you have found live termites so we can prioritise the visit.
Urgent response across Greater Darwin.
Found live termites? Don’t touch them — call now.
Tell us you have active termites and we prioritise your inspection. Species ID, extent, and a clear plan — urban Darwin or rural Litchfield.