Bathroom Tile Anti-Mold and Stain Removal PenOver time, tiles in the bathroom and kitchen can easily accumulate dirt and mold. This anti mold pen from Japan is designed to deeply clean tile surfaces, quickly tackling stubborn black stains! Used just like correction fluid, simply apply it back and forth over the tile grout. The ink contains an antifungal agent that instantly whitens darkened gaps. Its hands free, xylene free, and leaves no unpleasant odor, making it a must have for every home!