How to Get Pet Urine Out of a Curtains
Getting pet urine out of a curtains is very doable at home with the right order of steps. The short version: cold water only, mild detergent, then an enzyme cleaner to break down what blotting cannot lift. Because a curtains is moisture-sensitive, keeping everything sparing matters as much as the product choice.
What you’ll need
Recommended: Cold water and mild detergent, then an enzyme-based cleaner.
Homemade option: One teaspoon of mild detergent in 500 ml of COLD water. There is no good homemade substitute for the enzyme stage — the enzymes are the part doing the real work.
Dwell time: 10 to 15 minutes for the enzyme stage.
Step-by-step method
- 1
Start at the care label sewn into the heading or a side hem: many curtains are dry-clean-only, lined, interlined or heat-pleated, and none of those survives casual wet cleaning. If it is dry-clean-only, limit yourself to the smallest spot treatment or take the curtains to a cleaner.
- 2
For an in-place spot, support the hanging fabric from behind with a towel-wrapped hand so you can blot the pet urine without pushing it through into the lining.
- 3
Dab the area with COLD water on a white cloth and keep blotting dry. Cold is not optional: any warmth cooks the protein onto the fibre.
- 4
Mix a teaspoon of mild detergent into 500 ml of cold water, dab it on, and blot. Repeat until no more transfers to the cloth.
- 5
Apply an enzyme-based pet stain cleaner generously enough to reach everywhere the urine reached, and leave it to work for the full time on the label — usually 10 to 15 minutes. The enzymes need that time to digest the uric acid crystals that cause lasting odour.
- 6
Blot the area dry with fresh cloths, dab with plain cold water to rinse, and blot again.
- 7
Dry thoroughly, then check on a warm humid day: if odour returns, the crystals survive and the enzyme stage needs repeating — masking sprays only pause the problem.
- 8
For anything larger than a small spot, take the curtains down and work flat, then rehang only when completely dry so damp fabric does not stretch out of shape under its own weight — a lined curtain wet-cleaned in place can dry with the face and lining shrunk to different lengths.
Why this works
Protein stains like pet urine are chains of amino acids that behave like egg white: liquid when fresh, but permanently solid once heat gets to them — which is why the whole method runs cold. The enzyme stage uses proteases, biological scissors that cut protein chains into small water-soluble fragments a blot can lift. Urine adds a second problem: as it dries it forms uric acid crystals that detergents cannot dissolve, and only enzyme digestion truly removes — which is why the smell comes back on humid days after an ordinary clean.
Don’t do this on a curtains
- Never use warm or hot water on pet urine — heat coagulates protein and sets the stain permanently.
- Never use a steam cleaner before the stain is fully out, for the same reason.
- Avoid ammonia-based cleaners: to a pet, ammonia smells like urine and invites re-marking of the same spot.
- Never wet-clean dry-clean-only or lined curtains beyond the smallest spot — the face and lining shrink at different rates.
- Never use bleach on curtains; it destroys most curtain dyes and linings.
- Never scrub sun-weakened curtain fabric, which tears and fuzzes, or machine-wash anything with a buckram heading or thermal backing.
Fresh spill vs dried-in stain
Fresh urine is mostly water and lifts well if blotted thoroughly straight away. Dried urine leaves uric acid crystals that ordinary detergents cannot break down — they reactivate with humidity and keep releasing odour until an enzyme cleaner digests them.
Dried urine has already crystallised, so skip straight to the enzyme cleaner and give it a long dwell under a damp cloth. Large or repeated accidents usually mean the pad and backing are affected, which surface cleaning cannot reach.
Pet Urine on curtains FAQs
Will pet urine come out of a curtains?
In most cases, yes, with the right order of steps. Fresh urine is mostly water and lifts well if blotted thoroughly straight away. Dried urine leaves uric acid crystals that ordinary detergents cannot break down — they reactivate with humidity and keep releasing odour until an enzyme cleaner digests them.
What is the best cleaner for pet urine on a curtains?
Cold water and mild detergent, then an enzyme-based cleaner. From the cupboard: One teaspoon of mild detergent in 500 ml of COLD water. There is no good homemade substitute for the enzyme stage — the enzymes are the part doing the real work.
Can I use water-based cleaning on dry-clean-only fabric — watermarks and shrinkage on a curtains?
No. Curtains are the surface people forget until something hits them — then discover that many are dry-clean-only, lined, interlined or heat-set into pleats, none of which survives casual wet cleaning. Always start at the care label. Spot-clean in place where the label allows; take curtains down for anything larger, working on a flat clean surface. A lined curtain wet-cleaned at home can come back with the face fabric and lining shrunk to different lengths.
Does heat set pet urine?
Yes — this is the mistake that makes pet urine permanent. Keep hot water, steam cleaners and hair dryers away until the stain is completely out, and let the area air dry.
How long does a curtains take to dry after treating pet urine?
Spot-cleaned areas dry in 1 to 2 hours hanging in a ventilated room; a fully cleaned curtain must be completely dry before rehanging. Spot-cleaned areas dry in 1 to 2 hours hanging in a ventilated room. Fully washed curtains should dry flat or over two lines to spread the weight, and be fully dry before rehanging.
Pet Urine on other surfaces
Other stains on a curtains
Different stain? Different surface?
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Try the stain finderGuidance is general and based on stain chemistry, WoolSafe and NCCA best practice, and manufacturer care standards. Always spot-test in a hidden area first, and follow your item’s own care label where it differs.