CVA's Slick Load Barrel Blaster Cleaning Solvent makes cleaning your black powder firearm easy and efficient. It utilizes a citric-based compound that's water soluble and bio-degradable. After soaking a patch in the Slick Load Barrel Blaster Cleaning Solvent, run the patch through the barrel before swabbing the foam out of the barrel. This dissolves the residue left over from the black powder and helps prevent rust.