When you plan to dispose of the manure from your small farm and make it into organic fertilizer, there is an item you must focus on. Removing harmful substances from manure and eliminating its odor. In this respect, aerobic fermentation is the most commonly used method for fertilizer manufactures. Then in the presence of oxygen, how many types of methods can we use in small scale composting of manure? In general, there are three types of small scale composting methods for your choice. Including groove composting, windrow composting and in-vessel composting. They differ in terms of equipment model, capacity, area occupation, fermentation time, cost, etc. You can choose the most suitable one according to your needs.