All of our Smokehouses chunks are thoroughly dried and 100% all-naturalâ€¦ No additives. Our wood chunks have had all bitter tree bark removed to ensure your getting maximum smoke of 100% all natural wood. The wood chunks are Bigger, Chunkier, pieces of wood perfect for grilling and barbecuing. The wood chunks are perfect for use in our Gas Smoker Cooker and Wide Gas Smoker Cooker. All bags are 1.75 LB bags. (4 Hickory, 2 Apple, 2 Alder, 2 Cherry, 2 Mesquite).