Pure + Simple Cleanse is a powerful dual-action oxidizer designed to cleanse and detoxify water. Its unique oxidizer formulation removes chloramines and other contaminants that cannot be removed by the filter, restoring water?s dazzle with its special blend of clarifiers and water enhancers. Best of all, there?s no downtime. You can add Cleanse to the pool and swim just 15 minutes later. Each 250g pouch treats 40,000 litres of pool water (approx. 30% less product required than traditional shocks) when used as part of the Pure + Simple System.