Pet stains and odor
Pet stain and odor rug cleaning.
Pet accidents are the most common reason a good rug comes to us sooner than planned. Urine is also the hardest thing we treat, because what you see on the surface is only a small part of what has happened inside the rug. Treated properly, most rugs recover well. Treated badly, the stain spreads and the odor returns every humid day.
What urine does to a wool rug.
The problem
Fresh urine is mildly acidic. As it dries it turns alkaline and leaves salts in the fiber, and it is that alkaline residue that loosens dyes, weakens wool and, over time, can make a cotton foundation brittle. The odor comes from bacteria feeding on the residue, which is why a rug can smell worse on a damp day months after an accident.
Liquid does not stay where it lands. It runs down the pile, spreads along the foundation and soaks into the pad beneath, so the area affected is usually several times larger than the mark on the surface. In an older rug, repeated accidents in one place can leave the foundation stiff and prone to cracking when the rug is rolled.
Dye movement
Reds and blues bleeding into the ground.
Lingering odor
Bacteria feeding on residue in the foundation.
Stiff or brittle foundation
From repeated accidents in one place.
Stained pad and floor
Liquid passes straight through the rug.
Why surface cleaning fails, and what we do instead.
The work
Sprays, carpet shampoos and in-home steam cleaning treat the top of the pile. They can lighten the mark for a while, but they leave the residue in the foundation, and they often add enough moisture to reactivate it and spread it further. Heat from steam can also set urine stains and dye bleed permanently.
We start by testing every color in the rug for stability, because urine-affected dyes are often already on the move. The rug is then dusted from the back to remove dry soil, and the affected areas are located, sometimes with UV light, so nothing is missed.
Those areas are flushed and treated with an enzyme solution chosen for the fiber and the dyes, given time to break down the residue at the base of the pile and in the foundation. The whole rug is then washed by full immersion and rinsed repeatedly until the water runs clear, which carries the residue out rather than pushing it around. Drying is flat and controlled, so the foundation relaxes evenly and nothing wicks back up to the surface.
Where urine has weakened the foundation or caused losses, we repair them by hand once the rug is clean and stable; see conservation and restoration.
What cannot always be fully removed.
Honest limits
Most odor can be removed completely by a proper wash. Stains are a different matter. Where urine has already shifted a dye, or bleached a color over years, the change is in the fiber itself and no cleaning will fully reverse it. We can often reduce the mark considerably, and in some cases reweave the worst area, but we will tell you at the outset what to expect.
Rugs with long-term, repeated contamination in the same spot may also have lost strength in the foundation. Those areas are stabilized before washing so they survive the treatment.
What to send us.
What to send us
Send a photograph of the whole rug, close-ups of each affected area front and back, and the approximate size. Tell us roughly how long ago the accidents happened, whether they have been treated with anything at home, and whether the rug sits on a pad. The more we know about earlier treatments, the better we can plan the wash.
Timelines and pricing.
Timelines and pricing
Pet treatment is priced with the wash by the square foot, with any repair quoted separately after assessment; see our pricing page. Workshop rug cleaning takes about two weeks on average; every rug is different, and any repairs needed will extend that time. Pickup and delivery are free.
Frequently asked.
Questions
- Will the smell come back after cleaning?
- Not when the residue has been removed from the foundation by full-immersion washing. Odor returns when only the surface has been treated.
- Can old urine stains be removed?
- Often they can be reduced a great deal. Where a dye has already moved or faded, the change is in the fiber, and we will tell you honestly what can be recovered.
- Should I clean the accident myself first?
- Blot fresh urine with a white cloth and plain cold water, then let it dry. Avoid sprays, heat and steam, which can set the stain and move the dyes.
Related reading
Antique rug restoration steps, from intake to return
What actually happens between the day a rug leaves your floor and the day it comes back: seven stages, in the order a conservator works them.
Searching for rug repair near me? What to ask before you hand it over
Not every shop that says rug repair does the work in house. Six questions that separate a conservator's studio from a drop-off counter.
Inquiry
Send photographs of the affected areas.
Include the front and back, and tell us how long ago it happened. We reply with a written estimate.