Treating manure with aluminum sulfate (alum) is a best management practice (BMP) which reduces ammonia (NH3) emissions and phosphorus (P) runoff from poultry litter. However. the price of alum has increased markedly in recent years. creating a need for less expensive products to control NH3 volatilization. https://www.hollandscountryclothinges.shop/product-category/water-bottles/