Pro-Shots Copper Solvent is a Superior New Generation Formula that is made specifically for copper and powder fouling, while providing rust protection for your barrel. This formula has been developed and tested extensively to assure that it works fast  and effectively to clean your barrel. The synthetic formula uses positively charged ions activated additives that have a special affinity for copper and its oxides. The positively charged ions search out the negatively charged copper and copper oxide molecules. They bond and release the copper from the surface of the bore to provide a superior clean surface without copper and powder fouling! Pro-Shots Copper Solvent is a highly effective way to clean a barrel without the harsh and toxic chemicals used in traditional bore cleaners. The new innovative formula is a smarter, healthier and environmentally safer way to clean than the old brute force method of throwing harsh chemicals at copper fouling. No offensive odor. Improved Accuracy! A non-fouled barrel can give you improved accuracy. This new Generation Formula can give you a totally fouling free barrel!