This product is a non-chlorinated shock treatment specifically designed for swimming pools. Its primary function is to eliminate bacteria and other organic materials in order to keep the water clean and safe. It comes in a fast-dissolving powder form and effectively oxidizes contaminants, as well as eliminates chloramines (combined chlorine). With a neutral pH of 7, this pool shock can be used at the beginning of spring to open your pool, or as a regular maintenance tool.