Experience the ultimate cleaning power with our Black Streak Remover in a convenient quart size. Its easy application makes cleaning a breeze, and it's versatility allows you to use it on various surfaces. Say goodbye to stubborn black streaks on boats with our effective solution.BLACK STREAK REMOVER works on contact to eliminate black streaks caused by water run off. Black streaks and grime typically form below rubrails, drain holes, ports and windows. It is phosphate-free and biodegradable. BLACK STREAK REMOVER is safe and effective on fiberglass, metal, plastic, rubber, vinyl and painted surfaces.DIRECTIONS FOR USE:SHAKE WELL BEFORE USE. Spray product directly onto black streaks. Allow the product to remain on the surface for 2 – 3 minutes. Gently scrub, and then wipe off with a wet towel, microfiber, or sponge. For stubborn stains, repeat as needed. BoatCandy™ assumes no liability for damages resulting from improper application. Use only as directed.