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Posted by Charles Schuler on March 9, 2007, 3:49 pm
> Floor in kitchen/eating area is unsealed grey color for the most part.
> Around two tiles the grout is very dark, almost black. Not moisture
> as the color hasn't changed for several days. We can't recall
> spilling anything in that area. Considering acetone bath to treat it.
> Suggestions?
Go to a pool supply store and buy a gallon of chlorine. Carefully, using a
Q-tip, dab a bit on one small area and wait a bit and see what happens.
Pool chlorine is nasty stuff. Wear gloves and eye protection and be very
careful.
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