Removes oil on contact . Keeps the filter cleaner. Lowers the need for other pool chemicals. Helpful in any body of water where oil is a problem. Commercial pools with high bather loads benefit with less filter cleanings. Concentrated and economical. 1 oz treats 20,000 gallons water with normal bather load. Double application for moderate to high bather load and triple dose for extreme bather load. Spa Oil Out is diluted for a more user friendly spa application.