Water-dissolvable packets are easy to use and highly effective with hydrotherapy treatments. Fill the whirlpool to desired level, drop in the required size of HydroChlor™ packet and agitate 2-3 minutes. Contains 100% Chloramine-T, proven to be an effective way to sanitize. Chloromine-T is stable and has functions for killing right bacteria, viruses, fungi, E-coli, MRSA and spores.