粪便异味和苍蝇管理》，James C. Silverthorne 著

Manure and urine can release volatile compounds as they decompose, including ammonia, hydrogen sulfide, and skatoles. Wet or accumulated manure and bedding make these odors more noticeable in livestock shelters.

Keep bedding absorbent and relatively dry, ventilate the shelter, and move soiled material into a managed compost area. Silverthorne estimated 90%+ less odor after soft rock phosphate treatment at his horse stable. Separately, JPI lists Pfeiffer Compost Starter and Maria Thun BC as biodynamic options for uncomposted manure.

Odorous manure can signal ammonia loss, and some manure volatiles attract pest flies. Silverthorne highlights the value of fresher air around livestock shelters and managed composting that returns organic materials to the soil.

Pfeiffer Compost Starter is a JPI biodynamic starter used as a compost pile is built. JPI also lists Maria Thun BC as an option for uncomposted manure. Both fit within a complete management routine of suitable moisture, airflow, bedding, and regular manure handling.