Non-abrasive chemical solvent is specifically designed to remove all forms of bore fouling including copper with an absolute minimum of effort and no damage. It will quickly remove carbon build-up even in difficult to clean areas like the chamber throat. It also removes lead wax and even plastic shotgun wad build up. Control the copper fouling by pushing a few patches soaked with Butch's prior to shooting. Butch's is safe to use on normal and stainless barrels. 8oz Bottle.