Quick & Clean Sanitizer is designed for use in institutional kitchens (medical institution kitchens and dining areas, lodging establishment kitchens and dining areas, educational institution kitchens & dining areas), dairies, food processing plants, food service establishments, public eating establishments (restaurants, bars, taverns, cafeterias) where sanitization of food contact surfaces is of prime importance. When used as directed, this product will sanitize previously cleaned and rinsed, non-porous, food contact surfaces: food holding tanks, counter tops and finished wood or plastic chopping blocks. Quick & Clean Sanitizer will not damage sealed natural stone surfaces.