The superior quality of the bamboo series feeders and houses is featured in the insect, mold and rot resistant solid cross-ply bamboo, rust-free powder-coated galvanized metal fresh seed trays, durable vinyl-coated hanging wires and water-based preservative and stain. Removable fresh seed, rust-free tray lifts out easily for cleaning, preventing mold and bacteria growth. Keeps seed fresh by allowing water to drain and air to flow freely and diverts seed to feeding area giving birds easy access. Five times stronger and harder than cedar or cypress, bamboo is the most environmentally sound plant in the world, and provides double the defense against rotting, warping, swelling and shrinking. Sustainable, cost effective and ecologically responsible.