CleanStone by Bott and Sons Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $13.50 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Bott&Sons CleanStone is an expanded glass brick made to clean and remove hardwater staining from granite monuments Made to clean & remove hardwater from monuments Can also be used on tile, grout, concrete Works to remove mildew, limescale, and rust Easy to use and will not damage the stone