I was using TSP substitute (sodium carbonate) to wash a surface that was to be painted, and as I walked out of the bathroom, where I’d filled the bucket, the cat got underfoot and some of the solution sloshed out of the bucket onto the floor, leaving ugly dark stains on the quartersawn white oak floor in the hall. I wasn’t happy about that, and the spousal unit was unhappier still. Can anybody suggest a way to get rid of the stains?
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Maybe Oxalic Acid? Obviously try a small spot first to avoid worsening your problem, but it's a well known wood bleach. I just don't know how it will react with the Sodium Carbonate.
Edited 8/31/2004 3:59 pm ET by PaulB
Thanks. I thought of oxalic acid, but I was hoping someone here would know how it would react with these stains, none of which are in inconspicuous locations.
We had a puppy pee on a throw rug by the door. We didn't notice it for a couple days and pulled the rug up and found the stain. After sanding we did oxalic acid on it. Several times, different strengths. It did "ok". We wanted natural color to it. After resealing we put a rug over it again. If you are going to stain it darker "you" will probably always see it. Anybody over may not unless it is pointed out.