LeisureTime Spa 56 Chlorinating Granules 2 lbs P/N: 22337A Specifically formulated for spas, this concentrated granular chlorine effectively sanitizes and disinfects hot water. Features: Maintains clean, clear, sanitized water EPA approved Applications: Start-Up: See product label for complete application instructions. Due to the nature of this product it can not be shipped. In-store pick-up ONLY. Tips: Shocking the spa after each use will destroy organic bather waste For more information, please visit this products webpage.