T/C #13 Pls Bore Cleaner - An all natural bore cleaner which contains no petroleum based additives and is compatible with Natural Lube 1000 Plus. Number 13 will quickly and efficiently remove any trace of residue or fouling without eliminating the seasoning which has coated the surface of the bore. Number 13 is non-toxic and FDA food grade rated. All naturalCleans QuicklyNon-toxicBlack Powder Solvent8 oz