-Versatile Carbon Chain Quaternary Ammonium Compound -For 24 Hour Protection: 7.5 mL in 1 Litre Water - 2.37 % Alkyl Dimethyl Benzyl Ammonium Chloride, 2.37 % Alkyl Dimethyl Ethyl Benzyl Ammonium Chloride - 100% Human Safe - Available in 1 L and 5 L pack sizes