You pull the shower curtain back and see black stains creeping along the grout. You uncover the patio furniture after winter and the cushions are covered in dark spots. You pull the boat cover off in spring and the vinyl seats look like they have been abandoned for years. Mold and mildew stains show up everywhere moisture sits, and most household cleaners barely touch them. Better Boat Mold and Mildew Stain Remover was formulated to remove the toughest stains in the harshest environment on earth, open ocean. Spray it on, let the formula break down the stains, and rinse with water. No scrubbing required on most surfaces. For old set-in stains, a second application or light scrub finishes the job. The wide spray pattern covers large areas quickly so you spend less time cleaning and more time enjoying the space. Safe on vinyl, fiberglass, plastic, rubber, tile, grout, canvas, carpet, upholstery, cushions, curtains, and caulk. Use it on boat seats, bimini tops, covers, shower walls, bathroom tile and grout, patio furniture, outdoor cushions, awnings, vinyl siding, and gutters. Works on both indoor and outdoor surfaces. Avoid prolonged contact with metals or porcelain. Do not use on wood or painted surfaces unless you plan to refinish or repaint them. Test for color fastness in an inconspicuous area before use, especially on fabrics. Wear gloves and eye protection and use in a well ventilated area. Also available in a 1 gallon size for large jobs. Better Boat is a family owned American company based in Miami Beach, Florida.