Using your Kaytee Flat - Bac Water Bottle is super easy. First, attach the Snap Lock Bottle Bracket to your pet's cage using the E - Z twist attachment knob. Then, snap the bottle into the bracket. You can place it inside or outside the cage according to your preference. When the floating duck indicates it's time to refill, simply twist the knob to remove the bottle, fill it up, and snap it back in. Remember to keep an eye on the water level regularly. For maintenance, clean the bottle and sipper every few days with mild soap and warm water. Rinse it thoroughly to make sure no soap residue is left. This will keep your pet's water clean and fresh.