Hyseas Boat Soap safely removes grime, bird droppings and fuel without stripping the wax or harming the boats finish. This product is completely biodegradable and can be used above or below deck. Safe for cleaning upholstery, sails, life preservers and inflatable boats. Dilute 1oz. per gallon of fresh or salt water for regular use and up to 4oz, per gallon for those heavier jobs.