By purging the pool of this build-up, these pool symptoms will be eliminated. Purge cleans where you can’t! Purge contains Smartzyme technology. Smartzyme technology uses enzymes which can breakdown these hidden contaminants. A small amount of Natural Chemistry’s enzymes can treat a large amount of water due to their ability to bind to these contaminants and reduce them to smaller and smaller parts, breaking them down to their original components such as carbon and water.