Spa Oil Out leaves no residue and will digest oil from the filter leaving it much cleaner which keeps your spa water cleaner. It digests oil on contact and is safe for both the environment and spa goers. Spa goers can re-enter the water immediately after treatment. Spa Oil Out provides a variety of benefits such as improving filtration, clearing water and making water sparkle. The product also prevents scum from building up. It’s a hypo-allergenic product that is also non-toxic, non-corrosive and non-carcinogenic so you can feel safe using the product in your spa. To use Spa Oil Out, measure one ounce of the product per 500 gallons water while the water is circulating. Repeat the process if necessary after three days. The recommended maintenance dose is one ounce per 500 gallons weekly. Use the product as often as necessary. No waiting time before entering the water is necessary.