Not used, full containers. 1 Gallon (3.758 Liters) each Cleans and Degreases in One Application! Marine Clean cleans and degreases in one application without leaving residues, noxious fumes or flammable solvents. No other cleaner works as fast or as well. It makes petroleum-based cleaners almost obsolete because Marine Clean can be diluted with water up to 3, 4, 5 and even 10 times its volume while remaining more potent than other cleaners. Marine Clean removes grease, oil, mildew, algae, musty odors, soap films, wax. Use it to clean canvas, vinyl, nylon, holding tanks, grease traps, auto parts and more. Metal Prep provides the best adhesion on any surface, including aluminum and shiny polished metal surfaces