he Enviro World Compost bin with Base is the most popular accessory for biggest selling composter. "Compost Happens" The FreeGarden Earth compost bin is an efficient, durable, and economical tool that saves money and provides many benefits for homeowners and gardeners moreover it comes with Base which Increases ventilation and drainage. Manufactured of 100% recycled content, its single-unit main body construction means no difficult assembly and no structural integrity issues over time or in extreme weather conditions. The animal and pest resistant lid twists for variable ventilation control, and covers a large 19.5 in. (49.5 cm) opening that offers easy, generous access to add material and maintain the pile.