Pro-Shot's Copper Solvent IV is a Superior Next Generation Formula that is made specifically for Copper and Powder fouling. It cleans while providing superior rust protection. This superior formula is used by competitive shooters, federal law enforcement, and accuracy minded shooters across the globe.Synthetic Cleaner (Non-Ammonia) Next Generation FormulaLight Scent- Non-Offensive OdorUses Positive Charged Ions with Activated AdditivesRust & Corrosion ProtectionEnvironmentally Safe Formula - No Harsh or Toxic ChemicalMade in USA