Dear James: Our bathroom must have been remodeled several times because it has some glossy and matte-finished tile. How can we clean off the dark, nasty grout mildew?—Greg T.
Dear Greg: Almost every bathroom tile has some spots of dark mildewed grout, but when it is excessive, it really looks bad and makes the entire bathroom seem dirty. Grout is very different from the tile in that grout is actually pretty porous and absorbs moisture.