The concern of farm odor is forcing the industry to look at alternative methods of manure handling. Composting, while not completely odor free, is a good alternative. This provides soils with rich nutrients that chemical fertilizers cannot. In Biotech shelters, it is essential to mix the contents collected in order to obtain a thorough distribution of nutrients. Separation of manure using mechanical or chemical means or a combination of the two is necessary in liquid manure systems.

Decomposition is the process of the breaking down of organic material (when conditions are right – preferably warmer) by microbial organisms. Four key factors in decomposition include nutrient balance, moisture content, temperature, and aeration.

Proper composting requires proper equipment. This equipment must be able to prepare the site of composting. The improper sizing of compost turner equipment to perform the function can result in higher cost per ton of finished compost. Good compost sites must have adequate drainage and be a sufficient distance from areas of concern (such as towns, schools, etc.).