ACTIVE Seal & Grout Stain Remover is a powerful, fast-acting gel that whitens and deep cleans mildew, mold stains, and grime in minutes. Ideal for use on rubber gaskets, front-loading washer drums, refrigerator seals, shower walls, tubs, tiles, grout, and more. Its thick formula stays in place, even on vertical surfaces, allowing for precise application without dripping. The concentrated gel tackles black spots, discoloration, and buildup, lasting up to a year per bottle. Made with simple ingredients and a gentle scent, it’s tough on stains but safe for home surfaces.