This caddy refill replenishes the cleaning solution in the Rubbermaid Pulse Microfiber Floor Mop's onboard reservoir. Using this innovative design that allows user-controlled release of solution means cleaner floors faster, easier and more effectively. Securely transport the caddy on Rubbermaid Cleaning Carts for efficient on-the-go refill. Caddy allows you to clean up to 10,000 square feet, reducing the frequency of trips to the supply closet. The 2 gallon capacity refills the Pulse up to 12 times. Clean Connect Cap and Rubbermaid Pulse Hose snap together for spill-free refilling. Flow automatically stops when reservoir is full.