Since it's introduction in 1999 this product has literally set the market back on its heels. Butch's has received nothing but the highest praise from competitive shooting circles. Butch's is a non-abrasive chemical solvent specifically designed to remove all forms of Bore Fouling including copper with an absolute minimum of effort. It will quickly remove carbon build-up even in that "difficult to clean" throat area. It will easily remove lead, wax and even plastic from shotgun wads. However, unlike most powder solvents, Butch's can also control the copper fouling and by pushing a few patches soaked with Butch's will control copper build-up. Butch's is safe to use on carbon and stainless barrels.