Check the listing for details. MARBLELIFE Mold & Mildew Stain Remover Cleaner. Condition: New. Listed at 24.99 USD. MARBLELIFE Mold & Mildew Stain Remover 32 oz Spray is a safe and effective way to eliminate frustrating mold stains indoor or outdoor from marble, travertine, concrete, grout, slate or other stone and grout showers or concrete surfaces. 1 Gallon bottle can effectively clean up to 600 sqft. It safely penetrates the surface to remove the mold stains at the source, all while shortening your overall cleaning time. Easy to use, safe on all shower surfaces. Formulated to break water tension, allowing the cleaner to penetrate and flush out surface pores and porous stone surfaces. As much as 6 times more effective than standard solutions.For light mold – this is a spray, soak and rinse product. (Shower Tile & Grout)For heavy mold – it’s a spray, scrub and rinse product. (Driveway and Sidewalk Mold Stain Removal)Effective for use even on marble which is traditionally sensitive to aggressive cleanersGreat for cleaning patios and drivewaysTry it and see how fast it goes to work!