Punch 10 to 15 holes in the plastic bag to allow for air circulation through the leaves. Turn the bag once or twice and add water, if needed, to keep the leaves moist. After about 2 weeks open the bags to check on the composting process. Under most circumstances, the compost will be ready for use in about 6 to 8 weeks. Commercial Composting Devices - Garden catalogs and retail outlets offer numerous different types of commercial composting devices, such as boxes, bins and barrels.
Prices vary and range from reasonable to expensive.
Commercial composting devices will do a fine job, as long as you follow the basic essentials of composting. The compost has a bad odor. Not enough air, pile too wet. The center of the pile is dry. Not enough water, too much woody, coarse material.