Black tumbling outdoor compound fertilizer drum 162L 60041012Dual Chamber: While a side is producing, you can simultaneously add new ingredients to the other side. The constant exchange of materials on both sides creates a cycle, and you will get a sufficient organic mixture. Rotating Design: The 360 rotating system lets you avoid mixing and digging into your compost pile with your hands. Fill the container with kitchen and garden waste, slide the door closed, and turn it in every couple of days. Ventilation