NeverWet Multi Surface - $12 (Thousand Oaks)

Rust-Oleum NeverWet Moisture Repellent Treatment is an advanced super hydrophobic technology system designed to prevent moisture and corrosion on a number of surfaces including most plastics, canvas, concrete, galvanized metal, asphalt, metal, wood and much more.
Two-part formula will not allow liquids to penetrate the surface.
Not recommended for use on electronic devices or clothing--use NeverWet Fabric or Boot and Shoe on clothing, footwear and other similar fabrics.