Zep Industrial Grout Cleaner and Brightener - 32 oz

EXCEPTIONAL GROUT SCRUB: Deep cleans grout lines and lifts stains

VERSATILE GROUT CLEANER: Safe for use on most floors with grout lines, including on floors with colored grout

PRO STRENGTH ACIDIC FORMULA: Bleach-free professional-strength formula cleans with little or no scrubbing

FOR USE ON: White or colored grout lines on tile floors

NOT FOR USE ON: Marble, terrazzo, travertine, natural stone, chrome, stainless steel, brass, or Corian. These sensitive surfaces are susceptible to damage.