EASY TO USE: Simply spray the product directly onto the surface and allow to sit for 1 to 3 minutes. Agitate the surface with a brush or terry cloth towel and then thoroughly rinse and dry the surface. MULTIPLE USES: Safe for Boats, Vinyl, Tile, Grout, Patio, Coolers, and just about anywhere else that may accumulate stains. Marine 31 Mildew Stain Remover works like no other! SAFE: Erase these unwanted stains without the risk of discoloring, dulling or drying out vinyl seats or other fabrics. Even the most severe stains are no match for the cleaning power of Marine 31 Mildew Stain Remover. FAST WORKING: Marine 31 Mildew Stain Remover will quickly erase stains from marine surfaces including vinyl seat cushions, rubber fenders, fiberglass, gel coat, canopies & more without the need of abrasive power washing and/or scrubbing. Kit includes: 1 bottle of 20 Oz. Marine 31 Mildew Stain Remover Gel Cleaner, 1 SPEED MASTER Interior Scrub Brush, 2 16x16 inch mango microfiber towels.