Jack's Magic The Tile Plus Stuff is a fast, effective way to remove stains from your pool's tile, grout, decks, fiberglass and even vinyl liners, keeping your pool looking factory new for years to come. Its powerful gel formula clings to surfaces to concentrate its cleaning power, allowing you to scrub much more effectively than runny liquid alternatives. The Tile Plus Stuff is even effective on wood, and is effective against metal stains. Best of all, this product is made by Jack's Magic, an industry innovator in pool chemicals, allowing you to buy with confidence.