The first enzyme helps remove tough protein stains such as Blood, Grass, and Sweat The second enzyme works on starch stains like Tomato and BBQ Sauces. The third enzyme targets oily stains like Salad Dressing and Margarine. Triple Threat Stains Need Triple Enzyme Formula. This package includes on 22 Ounce bottle of Zout Laundry Stain Remover