I watched a episode of Anthea Turner perfect housewife a few months back and she gave this woman a recipe for getting her less than white grout up to brand new gleaming white! I haven't paid much attention to my grout but as my wonderful mother pointed out the other day its looking a bit grey, just wondering if anyone can remember what it was she said to use as im actually quite embarrassed to have people round now, Thanks ladies! may your grouting always gleam to a perfect shine ! LOL!