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How deep has the pet urine gone?
The mark you can see is often smaller than the problem. Answer seven questions and get an estimate of whether it is still in the carpet fibre, has reached the underlay, or needs someone to look under the carpet.
Your estimate
What to do next
- Do not use steam, hot water or a hair dryer on it — heat can set the odour.
- Do not use ammonia-based cleaners; the smell can encourage a pet back to the same spot.
- Do not rely on deodorising powder — it covers the smell without removing what causes it.
Share or save this result
This link reopens the tool with your answers filled in — useful for showing a partner, a landlord, or us before a visit.
This is an estimate from what you can observe, not a diagnosis — depth cannot be confirmed without looking under the carpet. On the day we use a UV light to find urine that is invisible in daylight, which regularly turns up spots nobody knew about. Severe or biohazard contamination may need a specialist remediation provider rather than a cleaner.
Why the smell keeps coming back
It spreads underneath
Liquid soaks through the carpet backing and spreads sideways through absorbent underlay, so what is under the carpet is usually wider than the mark on top of it.
Humidity brings it back
Old residue can become noticeable again on warm or humid days even when the surface looks clean — which is why "it smells again every summer" is a useful clue rather than bad luck.
One method does not fit every case
What works depends on the fibre, how deep it went and what is underneath. That is also why an honest answer sometimes is that the underlay has to be dealt with separately, and no amount of surface cleaning will settle it.
Want someone to actually find it?
Pet urine treatment across Point Cook and Melbourne’s western suburbs — we find the spots with a UV light first, then treat what is there, and tell you straight if the underlay is the real problem.
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