McNett Aquamira Chlorine Dioxide Water Treatment Drops. Kills odor causing bacteria and enhances the taste of stored potable water. Treats up to 30 gallons of water. No after taste. Two 1 oz. bottles. Part A contains 2% aqueous solution of chlorine dioxide. Part B contains 5% phosphoric acid activator. Directions for use are printed on back of packaging. Hang packaged.