Miracle tile and stone cleaner is a pH neutral cleaner designed for all tile, stone, grout and masonry surfaces. Strong enough for the professional, yet gentle enough for the do-it-yourself specialist. tile and stone cleaner is a nontoxic cleaner that can handle the most difficult stains, yet is gentle enough for everyday use. It is very effective as an ongoing maintenance cleaner for surfaces previously sealed with the appropriate Miracle Penetrating Sealer/Impregnator. tile and stone cleaner will not harm the polish on polished stone surfaces. Always protect neighboring surfaces including wood, carpet, metal, landscaping and other non masonry surfaces. Coverage will vary depending on density, porosity, texture, surface absorption, weather, time solution left on surface and application methods. Used as directed, tile and stone cleaner will clean up to 10,000 square feet per gallon (927 square meters per 3.785 litters). Store tile and stone cleaner in the original container properly sealed and unmixed. Stored at 77 degree F (25 degree C), tile and stone cleaner will have a shelf life of 12 months. Do not allow to freeze. keep out of reach of children.