Brass Case Cleaner (1 gallon) This biodegradable, environmentally friendly formula is especially formulated to clean brass cartridges. Non-toxic, non-flammable and non-hazardous, Shooter's-Choice Brass Case Cleaner is non-corrosive to metal parts. It effectively breaks up and removes fouling and dissolves oil, grease & powder build up. Available in a 1 gallon jug. Can be used without an ultrasonic cleaning tank but for best results, use a heated ultrasonic machine MADE IN THE USA