Dog and cat urine in carpet: why the smell returns, and how it is treated
A urine smell that returns after cleaning is coming from below the pile: the backing, the pad, sometimes the subfloor. The fix is to treat the urine where it sits before anything rinses it, and Engineered Floors, a carpet manufacturer, tells you not to apply heat or hot water to a urine stain.
Maid VIP estimate: quoted per spot, with an enzyme pre-treatment. Services fulfilled by our affiliated service partner, Maid VIP. Covered: Old Town Camarillo, Mission Oaks, Spanish Hills and Las Posas, Leisure Village, Camarillo Heights, Camarillo Springs, Oxnard. Call (805) 793-0293
Four layers, and how far urine gets
| Layer | What reaches it | What it takes |
|---|---|---|
| Pile | Every accident | Blotting and a urine treatment, if caught early |
| Backing | Most accidents that sit for a while | A treatment worked down into it before any rinse |
| Pad | Repeated accidents, or one large one | Often cutting out and replacing that section |
| Subfloor | Repeated accidents in one spot | Sealing the stained wood or concrete |
The pad is the usual trouble. Urine spreads sideways through it, so the wet area below is often wider than the stain on top.
Why the smell can be worse after a cleaning
Dried urine is quiet until water reaches it. A cleaning that soaks the backing without breaking the urine down wakes it up, and the odor rises as the carpet dries. Heat makes things worse, because heat can set a stain; Engineered Floors, the maker of Dreamweaver carpet, is blunt about it: “Do not apply heat or hot water to a urine stain.” Warm, humid days can bring an old smell out again.
Finding every spot
Cleaners map the damage before they price it. Under a UV light, dried urine glows, showing each spot and how far it spread across the surface; a moisture meter pressed into the carpet shows where the backing and pad are still holding it. The light often turns up old spots nobody knew were there.
Enzyme and oxidizing treatments
Enzyme and oxidizing treatments break urine down rather than cover it. They work only where they reach and only with time, so the cleaner applies enough to soak as deep as the urine went and leaves it to dwell before extracting. That is why a quick spray on the surface rarely ends a smell. Some oxidizers can lighten dyes, so a hidden spot gets tested first.
When the pad has to go
Usually the soaked section of pad comes out and a new piece goes in, with the subfloor under it sealed, before the carpet is laid back and treated. New pad runs $0.75–$2 per square foot in a carpet installation on HomeAdvisor’s figures, and pulling back and relaying the carpet adds labor. That is flooring work, not cleaning. Unless the job is minor, it takes a Contractors State License Board license. A minor job comes to less than $1,000 in all, counting labor, materials and everything else; needs no building permit; isn’t part of a larger project or split into smaller contracts; and is done by someone who has no employees and whose ads don’t claim a CSLB license. Flooring work like this isn’t referred through this site. Clean it or replace it? covers when new carpet is the better buy.
What treatment costs
Stain removal costs $40–$300 on Angi’s figures, depending on severity, while pet stain and odor removal is billed at $30–$50 per hour on HomeAdvisor’s. At $0.10–$0.30 per square foot on HomeAdvisor’s figures, deodorizing 300 square feet comes to about $30 to $90. Pet urine treatment lists what a visit includes.
National figures, not quotes: the cleaning company sets the price for your home before any work.
If it just happened
- Press white towels straight down on it and blot up as much as you can
- Dab on a little cool water and blot again
- No heat, steam or hot water on it
- Skip ammonia cleaners: to a pet, they smell like urine
- Mark the spot for the cleaner, even once it looks clean
Renting? Pet damage is one of the things a deposit can be charged for; the move-out guide explains the rules.
Sources
The cleaning prices on this page are national figures, read in October 2026 in the price guides listed below; none is a quote, and no Camarillo average turned up in the price guides checked. Facts about Camarillo come from the local pages listed.
- Engineered Floors, Dreamweaver carpet care
- Angi, carpet cleaning cost (2026 data, updated September 21, 2026)
- HomeAdvisor, carpet cleaning cost (updated June 17, 2026)
- HomeAdvisor, carpet replacement cost (updated June 20, 2026)
- University of San Diego Center for Public Interest Law, AB 2622 minor work exemption
- California Business and Professions Code section 7048, the minor work exemption