Chlorine Free Shock 2lb.
Chlorine Free MPS Oxidizing shock for hot tubs. 2lb. Bottle St. Cyr brand.
St. Cyr’s Chlorine-Free Shock is a great supplemental shock to use with chlorine or bromine-based hot tubs. This is a high-strength MPS oxidizer, We recommend using this product after each soak to help keep the water clear.