Do not swallow.
To refill the Duck Blue plus cage: Do not remove plastic wrapping on the refill block, it will dissolve in water.
1. Unclip clasp on Duck Blue Plus cage and insert refill block.
2. Ensure the clasp is firmly locked before placing the cage back under the toilet rim.
3. Pull the hook over the side rim of the toilet bowl and place unit under the rim.
4. Position so water will flow evenly over cage surface.
5. Use only Duck Blue Plus refills in the Duck Blue Plus cage.
6. For best results, replace the cage every six months.
Hook locks under toilet rim.
Quick, secure fitment.
Easy refill.