How to Get Dog Urine Out of a Mattress (Stains & Smell): 8 Steps
A dog accident on the mattress feels like a disaster, but you can save it. Here's the 8-step method to remove dog urine stains and smell from a mattress using baking soda and enzyme cleaners — without soaking it.
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Few accidents feel as defeating as dog pee on the mattress. You can't throw it in the wash, you can't soak it without risking mold, and the smell seems to settle in for good. But mattresses are saveable — you just have to work with their one big limitation: they hold moisture, so you clean with as little liquid as possible.
Here's the 8-step method that removes both the stain and the smell.
1. Strip the bed and blot immediately
The Problem: Urine spreads through the mattress top the longer it sits.
The Solution: Pull off all bedding (wash it on the hottest safe setting), then blot the spot with dry towels, pressing firmly to lift moisture up. Don't rub.
Why it works: Removing the bulk of the liquid first means everything after it works better and you use less moisture overall.
2. Apply a light vinegar solution
The Problem: You need to lift the stain without saturating the mattress.
The Solution: Mix two parts cool water, one part white vinegar, and a small squirt of laundry detergent in a spray bottle. Lightly mist the stain — damp, not soaked — and let it sit 10–15 minutes.
Why it works: Vinegar neutralizes the ammonia smell and helps loosen the fresh stain before the heavier lifting.
3. Blot again
The Problem: That solution is now holding loosened urine.
The Solution: Press clean dry towels over the area to pull the moisture back out. Repeat with fresh towels until barely any transfers.
Why it works: Every pass of blotting removes liquid the mattress would otherwise hold onto.
4. Bury it in baking soda
The Problem: Deep moisture and odor remain after blotting.
The Solution: Cover the entire damp area with a generous layer of baking soda and leave it 8–10 hours (overnight is perfect).
Why it works: Baking soda draws moisture and odor up out of the mattress as it dries — a low-liquid way to pull the smell back toward the surface.
5. Vacuum it up
The Problem: You've got a crust of spent baking soda.
The Solution: Vacuum it all away with an upholstery attachment.
Why it works: It removes the moisture and odor the baking soda absorbed, leaving the surface ready for the step that actually eliminates the smell.
6. Treat with an enzyme cleaner
The Problem: Baking soda and vinegar reduce odor but don't break down uric acid crystals — the real source of a lingering smell.
The Solution: Lightly apply an enzyme cleaner to the stain per its directions (mist, don't soak), and let it dwell the full time.
Why it works: Only enzymes digest the crystals, so this is what stops the smell from coming back.
7. For tougher stains, use an oxy upholstery formula
The Problem: An older or larger mattress stain may need more lifting power.
The Solution: A pet upholstery cleaner with an oxy boost and a built-in brush helps lift set stains from the fabric surface — again, used sparingly.
Why it works: The oxy action breaks down discoloration on the surface fabric while you keep moisture to a minimum.
8. Dry it completely
The Problem: Any trapped moisture in a mattress invites mold and mildew.
The Solution: Point a fan at the spot, open windows, or set the mattress on its side. Make sure it's bone-dry before you remake the bed. Repeat steps 3–7 if any stain or smell remains.
Why it works: Thorough drying is what separates a saved mattress from a moldy one.
Frequently Asked Questions
How do I get dog urine smell out of a mattress?▾
Blot up the urine, mist with a diluted vinegar solution and blot again, cover with baking soda for 8–10 hours and vacuum, then apply an enzyme cleaner to digest the uric acid that causes the lingering smell. Keep moisture minimal and dry the mattress completely to prevent mold.
Can I save a mattress after a dog peed on it?▾
Usually yes, especially if you act before it dries. The key is cleaning with as little liquid as possible and drying thoroughly. Use baking soda to pull out moisture and odor, then an enzyme cleaner to eliminate the smell at the source.
Will baking soda alone remove dog pee from a mattress?▾
Baking soda absorbs moisture and reduces odor, but it doesn't break down the uric acid crystals that cause the smell to return. Follow it with an enzyme cleaner for a permanent fix.
How do I dry a mattress after cleaning it?▾
Aim a fan at the spot, open windows for airflow, or stand the mattress on its side, and let it dry completely before remaking the bed. Trapped moisture is what leads to mold, so don't rush this step.
The Bottom Line
A mattress accident is recoverable as long as you respect the one rule: minimal moisture, maximum drying. Blot, lift with vinegar, pull out odor with baking soda, eliminate it with an enzyme cleaner, and dry it fully. Your mattress — and your sleep — will be fine.
Related: the best enzyme cleaners for the job, and why your house still smells if the odor persists elsewhere.
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