Pro Shot 8-Ounce Copper Solvent IV LIQUID Made in USA Formulas uses activated positively charged ions that have an affinity for copper and its oxides New innovative formula is a smarter, healthier, and environmentally safer way to clean than the old brute force method of throwing harsh chemical at copper fouling with the Ammonia solvents Rust and Corrosion Inhibitors, No offensive Odor All Pro Shot products made in USA from USA components