BioGuard Kleen It Filter Cleaner is designed to remove scale/clarifier deposits, dirt, and debris from the pool’s filter. This product is comprised of a dual action formula that can prolong the life of your filter. It helps prevent scale build up and rust. The experts recommend that this product should be used at least once per season to keep the filter clean. Kleen It has been proven to not damage the filter equipment and to be safe for all filter types.

Sand Filter & Some D.E. Filters:

Twice each pool season, mid-summer, and in the fall, clean the pool filter as follows: Backwash filter thoroughly. Turn pump off. Chlorine must be removed from the skimmer basket prior to addition of this product. Automatic feeder should be turned off prior to any addition of this product. Pour entire bottle of this product into skimmer. Turn pump on until pump primes and product moves into filter. Leave filter selector in backwash position or in closed position. Wait one hour. Turn pump on with selector in backwash position, until backwash water is clear.