What are the best wood finishes for preventing water absorption in pine outdoor garbage bins?

Pine outdoor garbage bins require specialized wood finishes to prevent water absorption and ensure long-term durability. The best wood finishes for this purpose include spar urethane, which forms a flexible waterproof coating that withstands weather changes. Marine-grade varnish provides excellent UV protection and water resistance, specifically formulated for outdoor conditions. For a natural look, boiled linseed oil penetrates deep into pine wood fibers, creating a moisture-resistant barrier while enhancing the wood's grain. Modern epoxy resins offer superior waterproof sealing, completely blocking water penetration when properly applied. Always prepare the surface by sanding and cleaning thoroughly before application. Multiple thin coats provide better protection than single thick applications, with regular maintenance recommended every 1-2 years depending on climate conditions. These finishes work by creating either a surface barrier or penetrating deep into the wood structure to repel water effectively.