Vermont Organics Reclamation Soil 40 lb. Coop, Pen, and Pile DeodorizerCoop, Pen, and Pile Deodorizer is made of zeolite. Zeolites are microporous, aluminosilicate minerals that soak up water and nutrients even better than our Biochar 100, and like biochar, zeolites lighten heavy soils. This product rebalances manures and other potential sources of odors in barns and animal pens. Zeolites will hold your nutrients in your compost until your plants need it. Improves nutrient and water management Positive impact on climate