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After removing the carpet from our bathroom closet, I found urine stains on the plywood sub-floor (serenity now).

It sounds bad but the floors are quite sturdy so I'm reasonably certain that it's a superficial stain. What would be the recommended way of cleaning it (short of removing/replacing the sub-floor).

I'm planning to eventually place carpeting back in the closet so I'm not concerned with leaving a mark. Just want to make sure it's sanitary and odor-free.

-M

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I use Zep pet spotter, but it's intended for carpets, not wood. I think mop it with a dilute solution of chlorine bleach to sanitize the area, then seal it with a primer / sealer to prevent any residual odors from escaping.

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  • Just an update -- primer/sealer seemed to work the best after trying a variety of different cleaning products. Thanks!
    – Mike B
    Commented Oct 28, 2010 at 16:29
  • I've heard that cleaning with bleach can actually encourage animals to use this area again.
    – Tester101
    Commented Jan 14, 2014 at 16:38
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What you want to look for are cleaners that are enzyme cleaners. These products actually break down the urine/biological waste. One example (that I use quite often) is Nature's Miracle.

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I just love Nok Out.

I successfully removed cat urine odors from furniture, matresses and laminated flooring with it.

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I would try oxygen bleach, in particular Stainsolver - see stainsolver.com. I'm not selling it, and in no way associated with it other than being a happy customer.

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