Bathroom stone is always polluted by oil, incrustation, soap scum and so on. To keep the cleanness and not to damage the luster of bathroom stone, you can use multifunction decontamination creams to clean. For the gap, firstly use brush to dip some decontamination creams to do the cleaning. Then place waterproof agent, which not only prevent water also prevent mould growing. What is worth mentioning, at present most of the detergent-sanitizer contains chemical materials that have great influence to natural bathroom stone, producing adverse reactions to the stone surface and mineral composition. Particularly serious is, most cleaner must react in stone surface at least five minutes to have effect, however, in this time period stone has been destroyed. So in cleaning bathroom stone surface should adopt neutral ph cleaner.