Spray Nine Marine Grez-Off® Heavy-Duty Degreaser. Easily cuts through oil, grease and grime. Cleans and dissolves heavy soils on inboard & outboard motors, machinery and dock equipment. Can also be used for bilge cleaning. Water-based and biodegradable. Contains no harmful petroleum solvents, phosphates or acids. VOC compliant, non-flammable and non-combustible. 32 oz.