The Clean Cup, Automatic Beer Pong Ball Washer THE CLEAN CUP by House Rules is the worlds first portable beer pong ball washer. THE CLEAN CUP is a battery-operated, completely self-contained unit that replaces the common dirty wash cup. Includes (2) THE CLEAN CUP logo beer pong balls and a Removable and Reusable filter to keep those nasties off your balls the entire night! Patented Rinse, Rotate, and Return technology! www.thecleancup.com