Powerful cleaner, restorer and maintainer for tile, grout, marble or stone Cold Weather AlertThis product may not perform properly if applied below the required temperature. Please check installation instructions on our website. Because this is a water-based product, it may freeze during shipping. For that reason we will not ship over a weekend if temperatures dip below 32 degrees F. If you want us to ship anyway, it will be at your own risk. Please call to arrange with a GBS eco-advisor. 888.727.2101 HydrOxi Pro Grout Smart is a unique concentrated solution of natural orange oil, hydrogen peroxide and surfactant technology that safely renovates, cleans and maintains hard surfaces. Restores and brightens tile and grout, brick and natural stone to its original color. Helps reduce contaminates including mold and mildew. Once the surface has been renovated, Grout Smart may be diluted to a light solution for daily cleaning. Also for use in auto-scrubbers, steamers, pressure sprayers and extraction machines. NOTE: For stubborn stains, let stand five minutes, then wash off. [tabs] Why We Like It This product is so strong you'd think it was an acid, but it's not. It's safe, odor-free and very effective at removing dirt, mold and mildew stains from difficult surfaces. Features & benefits Multi-purpose — powerful cleaner, degreaser and brightener for difficult surface Non-toxic — no perfumes, acids, alcohol, amines, ammonia, carcinogens, chlorine bleach, dyes, quats or phosphates; learn how to test a non-toxic product for tolerance Certified safe, low odor — Green Seal certified; NSF registered; made with hydrogen peroxide, natural orange oil and surfactants Eco-friendly — extremely low VOCs, biodegradable Cost-effective — concentrated formula makes multiple gallons, wastes less water, saves time and money