GUARANTEED TO CLEAN EVEN THE DIRTIEST GROUT. This is the best professional grout cleaner for tile floors! It makes dirt, grease, food spills, and soap scum disappear. Save money and do it yourself!.STOP SHOPPING for grout and tile cleaners that DO NOT work. Black Diamond Ultimate Grout Cleaner is the clear winner in performance. It makes cleaning an easy..THE WHOLE HOUSE will look cleaner when the floors are cleaner. Our formula will protect the grout, and have it's color restored to looking new. Can be used with a grout brush, or a grout steam cleaning machine..BE AWARE! Most grout cleaners use acid in their formulas that will damage the grout and make it re-soil faster, and harder to clean. These harsh chemicals are BAD for you, your family, and your pets!.WE CONTROL the whole process. We formulate, test, fill, label, and ship all of our own formulas. You can be assured that the Ultimate Grout Cleaner will exceed your expectations with every use..Crafted with love and determination to make cleaning easy in San Clemente CA.