Spray Nine Is A Professional Strength, Versatile And Biodegradable Formula. Using A Synergistic Blend Of Cleaning Agents, Detergents And Builders, This Cleaner And Degreaser Delivers A Powerful Cleaning Punch Without Harsh Abrasives Or Caustic Chemicals. Cuts Through Grease, Grime, Adhesives, Lubricants, Ink, Carbon Based Soils And Light Rust.