Renew All-Purpose Stone and Grout Cleaner quickly removes the toughest built-up grease and grime on all types of grout, concrete, and flooring surfaces. This is water-based formula that easily tackles the toughest soil and grease buildup, leaving grout lines clean and bright. Also designed to neutralize salt and ice melt residues and leave high-gloss floors shining. It’s also effective on walls, countertops, and even tiled showers and fiberglass tubs.