SeaKlear Solar Shield creates an ultra-thin, invisible barrier to protect your pool from evaporation and heat loss. With up to 30 days of protection per dose, it requires less maintenance compared to other liquid covers. Safe for families and pets, it minimizes heat loss and reduces water loss by forming a barrier on the surface of the water. Simply add 8 oz. per 15,000 gal of water and run the pump for proper circulation.