tango42 wrote:Also looking for a professional to take care of some very stained areas. The house and bathroom are nice, but the grout in the nice white marble living room floor and tile bathroom floor has turned dark from years of neglect.
Google research for worst case situations seems to point to cleaning with acid first followed by bleaching white again.
Vinegar is recommended (simple acid) for non-professionals by combine a 1/2 cup of ammonia, 1/3 of a cup of vinegar and 1/2 a cup of baking soda into a plastic bucket. Add in 7 cups of water and stir the mixture together.
Then follow with some type of bleaching material with "oxygen bleach" highly recommended, whatever that means.
Have tried the bleach route first... nothing happened.
Sodium Percarbonate, available at chem shops or as other generic products at carrefour (Vanish I believe, in a purple container). Otherwise known as Oxyclean.