The USA Gypsum pH Shield ammonia control for organic poultry litter treatment contains natural acidified calcium sulfate, a slightly hydroscopic mineral, which reduces ammonia release from the litter, while increasing water holding capacity, which results in less free moisture without becoming too dusty. Unlike synthetic acids, pH Shield is non-corrosive, safe to handle and does not add sodium or heavy metals such as alum. University trials confirm that pH Shield compares favorably in containing ammonia with no adverse effects to the birds.
