Farmers must be willing to maintain a large permanent pool. Anaerobic digestion offers excellent odor control. By controlling the temperature of anaerobic processes, year-round odor control is achieved. Methane fuel results from the process and can be used for heat or electrical generation. Skilled operators and routine maintenance is needed to successfully operate an anaerobic digester.
Aeration also offers excellent odor control.
This incorporates oxygen into the manure through mechanical means that supports aerobic rather than anaerobic bacteria. A wide range of odor control additives also are available that use various approaches in their attempts to reduce odors. The chemical or biological products are fed to the animal or added directly to the manure. Before purchasing any product, farmers should request independent verification of company claims. Lack of such information may indicate false claims.