How to Get Cat Urine Out of Clothes and Laundry
Updated July 2026
The short answer
Cat urine survives normal washing because its odor comes from compounds — including felinine, unique to cats — that regular detergent does not break down. A wash that smells fine while damp can reek again once the clothes warm up. The fix is an enzyme pre-soak: rinse the urine out with cold water, soak the clothes in an enzyme cleaner solution labeled for pet urine, and then machine wash cold with your normal detergent. Keep everything out of the dryer until the smell is completely gone — heat bonds the remaining compounds to the fabric and re-releases the odor every time the clothes warm up.
Before you start
You need: cold water, an enzyme cleaner whose label mentions pet or cat urine (generic enzyme products often lack the right enzymes), your normal detergent, a bucket or basin for soaking.
Keep the affected clothes separate from other laundry. Washing them in a mixed load can transfer the odor to everything else.
Check the care label. Delicates and dry-clean-only items should go to a professional cleaner — tell them it is cat urine so they treat it correctly.
If the cat keeps peeing on laundry, that is a behavior or health signal worth attention — clothes left on the floor are a common target, and a sudden change is worth a vet check.
Steps
- 1Rinse the urine out with cold water first. Hold the affected area under cold running water, from the clean side, to flush out as much urine as possible before it dries further.
- 2Mix an enzyme soak. Follow the enzyme cleaner label — usually a capful or two in a basin of cool water.
- 3Soak the clothes for at least 1–2 hours. Overnight is better for dried or repeat accidents. The enzymes need sustained contact to break down the uric acid and felinine compounds.
- 4Machine wash cold with your regular detergent. Do not add bleach or vinegar to this wash — let the enzymes' work rinse clean.
- 5Smell the clothes while damp, then again once air dried. Odor that returns as the fabric dries means compounds remain.
- 6Repeat the soak-and-wash cycle if any odor remains. Two rounds are common for set-in accidents.
- 7Air dry until you are certain the smell is gone. Only then is the dryer safe.
What not to do
- Do not put cat-urine clothes straight in the washer with the rest of the laundry — rinse and pre-soak first, and wash them separately.
- Do not use hot water on the first wash — heat can set the odor compounds before the enzymes have broken them down.
- Do not use the dryer until the smell is completely gone, checked on dry fabric.
- Do not mask with fabric softener or scent boosters — the odor returns and the softener coating makes the next enzyme treatment less effective.
- Do not mix ammonia-based cleaners into the treatment — urine contains ammonia compounds and the residual smell can attract the cat back to the same spot.
- Do not use chlorine bleach as an odor fix — it does not break down uric acid and can react badly with urine residues.
Frequently asked questions
Why do my clothes still smell like cat pee after washing?
Regular detergent does not break down uric acid and felinine — the compounds behind cat urine odor. They survive the wash, and warmth (a dryer, your body) re-releases the smell. An enzyme pre-soak before washing is what actually removes them.
What kind of enzyme cleaner works on cat urine?
One whose label specifically mentions pet or cat urine. Those contain urease and uricase enzymes targeting uric acid. Generic enzyme cleaners and enzyme laundry detergents are aimed at food and body-soil proteins and often lack the urine-specific enzymes.
Can I just add vinegar to the wash for cat urine?
Vinegar can slightly neutralize the ammonia-like smell but does not break down uric acid, so the odor tends to come back. It is a supporting player at best. The enzyme pre-soak is the step that works — and never combine vinegar with chlorine bleach in any load.
Is dried, set-in cat urine on clothes removable?
Usually, with patience. Rinse cold, then soak overnight in enzyme solution, wash cold, and air dry before judging. Set-in accidents commonly need two soak-and-wash rounds. If the item has been through hot dryer cycles since the accident, full odor removal gets harder.
Why does my cat keep peeing on clothes?
Soft piles of laundry are an attractive target, and residual odor invites repeats — which is why complete odor removal matters. A sudden new habit can also signal stress or a urinary health problem, so a vet check is worth it if the behavior is new. Meanwhile, keep laundry off the floor.
Cat accident on the carpet, mattress, or couch instead? Use the Stain Rescue Tool to get the right enzyme plan for that surface.
Use the Stain Rescue Tool