Spa 56 Chlorinating Granules 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. Tips: Shocking the spa after each use will destroy organic bather waste. Spa 56 Chlorinating Granules Advantage: Provides a reliable and easy-to-use source of concentrated chlorine. Can be used as part of the Simple Spa Care Program.