Here's the easiest way to clean an airgun barrel. Just pop these cylindrical, precision cut, heavy felt pellets into the breech of any kind of airgun, and fire them like regular pellets. The felt expands to wipe rifling detail clean in seconds. Great for emergency clean-ups in the field or between regular full cleanings using patches and cleaner/degreaser. Great for applying solvent or oil to barrels--just squeeze a drop of cleaner/degreaser or light polarizing oil onto the felt and shoot. CAUTION: These pellets may produce pain, or even injury, at extremely close ranges. Load two or three cleaning pellets at a time to provide needed resistance on spring/gas spring airguns to prevent harmful piston slam.