OK, I need successful methods to remove excessive cat urine from antique pine floors. The floors are T & G 1 1/4" thick X 6". Manufactured prior to 1874. I have sanded and sanded and sanded some more. The homeowners have tried everything they have heard, every product recommended. The walls, widow sills, window frames peeuuuu. The house is historic and everyone wants to keep the floors intact.
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