The 'green' Tetra Gun Cleaner Degreaser is a water-based formula designed to effectively remove lead and carbon fouling as well as pre-existing lubricant and solvent residue from firearm parts. The product also includes a special additive to prevent flash rust from forming before parts are re-lubricated. What's more, after wiping down gun parts, Cleaner Degreaser leaves virtually no residue. This Cleaner Degreaser is environmentally friendly, has a mild odor and is safe to use with no harsh solvents. It won't harm finishes, wood, rubber or plastics/polymers.