The Birchwood Casey lineup of SYNVEX products will become your trusted source for cleaning, maintaining, and protecting your firearms. Designed to maintain your firearms without damaging them, these gun cleaning oils complement one another for a complete lineup of products to meet a variety of needs.Bore Wash: Breaks down carbon, grease, oil, and grime. Safe on plastic, Cerakote, hydro printing, and wood. Leaves no residue behind. Odorless and non-hazardous. High purity biodegradable solvent.