A professional blend of five powders. Four are preservatives. Two of the four work both sides of the ph scale (sweet and sour). Sodium benzoate alone, for example, only works the acid side (sour) of the ph scale without a mold retardant or amplifier. “Stop It” also has an odorless mold retardant plus a powerful enhancer included. “Stop It” in its tracks! Non-corrosive. 2 oz. powder per quart of material. Full directions on label. Stop/preserve all red meat or glands, fresh or at any stage of taint.