This product is brand new, unused, and unopened. Mogeki Kazuya Bathroom Textured Floor Black Stain Remover (Powerful Removal) High-Concentration Chelating Agent × Baking Soda Scrub × Scraping Brush 180g Removes those "black stain" stains that cling to the textured floors of bathrooms. High-concentration chelating agents and baking soda scrub powerfully remove black stains. For black stains on textured floors! Soak with the paste to lift and scrape away. Includes a special brush sponge! Lifts and scrapes away dirt from the fine grooves of textured floors. "The dirt still comes off!" From the "Mogeki Kazuya" series, the expert in cleaning products.