SeaKlear Solar Shield creates an ultra-thin, invisible barrier that helps protect your pool from evaporation and heat loss. Reduces Heat & Water Loss - Minimizes heat loss by forming a harmless, invisible barrier on the surface of water to reduce evaporation. Family-friendly - A safe alternative to traditional covers, making this a family-friendly option for children and pets. Long Lasting ì Provides up to 30 days of protection per dose, while other liquid cover products need to be added daily or weekly. Directions for Use: Shake bottle before using. With the pump running, add 8 oz. per 15,000 gal of water. (For best dispersion, add Solar Shield in front of pool return line or to skimmer). Run the pump daily for proper circulation.