To Open Child-Resistant Cap: Squeeze sides of cap where indicated and twist counterclockwise one-quarter turn. Cap does not come off. To reseal, turn cap clockwise until tightly closed. 1. Flush to remove excess dirt before cleaning. 2. Apply 4 oz of product under and around the rim to coat the inside of the bowl. 3. Watch as the thick purple liquid begins to power through grime, rust, minerals and hard water stains. 4. When the product below the waterline turns green, brush entire bowl thoroughly and flush. Product above waterline will remain purple. 5. Rinse brush in fresh water after use. To Remove Tough Stains: 1. Apply generous amount of liquid directly onto tough stain. 2. Let soak for 15 minutes. 3. Brush entire bowl thoroughly and flush. Repeat if necessary. Storage and Disposal: Store this product in a cool, dry place. Do not reuse empty bottles. Wrap bottle and put in trash.