The New Pig Corporation PIG Drainblocker Drain Cover is designed to seal out liquid while providing lifelong flexibility, chemical resistance and protection against UV rays. Ideal for quick spill response or long-term, outdoor deployment, This drain cover, with DuPont Elvaloy technology stands up to sunlight and harsh weather conditions. A patent-pending vinyl composite top layer strengthens the drain cover to prevent stretching, ripping and tearing under normal foot traffic while the flexible, tacky urethane bottom layer molds to most surfaces and tightly seals drain openings to block liquid.