Size: 1 Gallon. Biodegradable and environmentally friendly, concentrated bilge cleaner cleans the dirtiest bilges. Emulsifies oil and fuel to allow easy removal into an approved pump-out facility. Also an excellent grease stripper for use on engines, generators, etc. Leaves your bilge and boat smelling good. * Please be environmentally responsible. Pump emulsified bilge water containing grease, oil and fuel into a container and dispose ashore. In many areas it is a criminal offense to pump petrochemical materials overboard.