43 Gallon Outdoor Dual Compost Tumbler Bin with Rotating Chambers43 Gallon Outdoor Dual Compost Tumbler Bin with Rotating Chambers Composting at home is easier with this dual chamber tumbler bin. It gives you two compartments so you can rotate batches without stopping. You can keep adding scraps to one side while the other finishes. The 43 gallon capacity is great for small gardens or patios. It's made from durable plastic and reinforced with steel for outdoor use. The spinning design helps mix materials faster