BOOYAH CLEAN NON-ACID INSTANT HULL CLEANER - Meets EPA Safer Choice Direct Release Criteria Designed to clean the dirtiest of hulls, removing water lines, scum lines, fish blood and stains. The powerful marine-grade ingredients are engineered to remove tough stains in a single application. Not for use to remove rust stains. Just spray on, let it remain on the surface for two minutes and rinse off with fresh water. BOOYAH CLEAN NON-ACID INSTANT HULL CLEANER is safer for direct release into the environment. Safer for all aquatic life as it passes EPA Safer Choice aquatic toxicity guidelines for algae, fish, and aquatic invertebrates. Can be used on all surfaces: Fiberglass, Plexiglas, Vinyl, Metal, Glass, Plastics, Rubber, Painted Surfaces, Pre-Waxed Surfaces, Carpets, and Decals. BOOYAH CLEAN Marine Products meet EPA Safer Choice Direct Release criteria for direct release into the environment including oceans, seas, lakes, rivers, creeks, ponds, ditches, sewers, wetlands and all other waterways as well as drylands when the treatment and/or collection of wash water is impractical or unachievable.