J.D.Pools Cleaner Posted on: 13th January 2017 by: admin J.D. Cleaner is used to remove the build up of oils and scale from pool walls DIRECTION FOR USE Mix 1 capful of J.D.Cleaner to 1/4 litre of water and apply with sponge or cloth and rub the scum line of the pool. Rinse the area with water.