How can I remove an old urine stain from a mattress?

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I have a mattress which has a rather large urine stain on it. The stain is about a year old, and the mattress is quite a dark colour with some shiny fabric leaf patterns. You can see the stain as a slightly darker patch.

Is it possible to remove this without discolouring the fabric further? I would really appreciate suggestions based on personal experience (I have done a little internet research).

Many thanks.
Sigh… some useful answers would be really great. My dog peed on it. I just cleaned it with warm soapy water at the time. We are moving overseas soon though, and I would like to spruce it up before selling it on to someone else in need.
Thanks!!! :)

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  1. Ashley2009 says:
    November 6, 2009 at 12:14 pm

    i had that prob once and i used peroxide, baking soda doesnt do much help.

  2. Ocean says:
    November 6, 2009 at 12:14 pm

    Remove as much of the urine as possible by flushing the article/area with clean water and then removing as much of it as possible with either towels of a wet-vac
    Once you’ve removed as much urine as you are willing (or able) to, re-saturate the area with a 50/50 water/white vinegar solution and allow it to air dry (use a fan if you’re in a rush).
    Cover the area liberally with baking soda – use lots!
    Fill a container with enough water to saturate the stained area and add a drop of regular dish detergent. Pour the solution on top of the baking soda.
    Using either your hands, towels, or a scub brush, work the baking soda/water/detergent paste into the fabric – work it in good and deep, then allow it to air dry.
    Once the area has dried completely and the baking soda has returned to powder form, vacuum it up. If the vacuum isn’t cutting it, it can be blotted up using water and towels.
    Repeat steps as needed to remove any remaining odor.

  3. §@mM¥ says:
    November 6, 2009 at 12:14 pm

    get a new mattress

  4. Matt D says:
    November 6, 2009 at 12:14 pm

    Nature’s Miracle: available at pet stores like Petco. Guaranteed.

  5. Delfinazul says:
    November 6, 2009 at 12:14 pm

    As a rule of thumb, the fresher the stain, the easier it will be to clean. So act quickly and follow these stain-busting methods.

    Things You’ll Need
    Sponge
    egg beater or whisk
    mild powdered detergent
    hydrogen peroxide
    enzyme cleaner
    upholstery cleaner
    white towel

    Step One – Try the mildest solution first. Mix up some "dry suds" using 1/4 cup mild powdered detergent in 1 cup warm water. Beat with an egg beater or whisk until suds form (they should look like whipped cream), then apply suds to mattress stain with a sponge. Wipe with a sponge dipped in warm water and wrung out.

    Step Two – Use an upholstery shampoo to remove tougher stains. Follow instructions on the product.

    Step Three – Use hydrogen peroxide to battle blood stains. Blot the stain with a white towel from the outside in as it begins to bubble. Continue until blood no longer seeps onto the towel. Some blood stains may be impossible to remove.

    Step Four – Remove urine stains in the same way you would remove bloodstains, or try blotting with white vinegar.

    Step Five – Tackle super tough stains with an enzyme cleaner which is a biologically-based cleaner that breaks down stains and odors. Or, consider hiring a professional mattress-cleaning company. Look in the Yellow Pages under "Mattress" or "Carpet Cleaners" (many also professionally clean mattresses.)

    Step Six – Whichever method you choose, be careful to avoid liquids seeping into the mattress’ padding. Residual moisture can cause mold or mildew.

    Step Seven – Make sure the mattress is completely dry before replacing the mattress pad and sheets.

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