Rejuvenate White Grout Restorer Marker Pens &ndash; Restore and Renew Dingy Stained Grout In Minutes &ndash; 2-Pack Instantly restores color to white grout Seals and protects grout lines in tile floors and shower stalls Creates a protective barrier against mold and mildew grout stains Whitens and brightens grout - each package is enough to treat an entire room Non-Toxic, safe for children and pets