It's coop refresher that neutralizes ammonia. I use the PDZ labeled "stall refresher" for goats & horses because it's half the price ($9.99 a bag at TSC). Coop refresher is the exact same stuff, just repackaged & sold at a much higher price.
MannaPro Sweet PDZ Horse Stall Refresher Granules
255 reviews
Description
Removes ammonia from the air by absorption. The ammonia in urine is trapped within the molecules of sweet pdz for fresh air. Unscented so it does not mask odors. Dries as it deodorizes. Moisture is absorbed by sweet pdz and remains effective even when capacity is reached. Sweet pdz can be recycled after use by applying the bedding that contains the pdz to gardens, pastures and compost. Serves as a slow release nitrogen/potassium fertilizer. Color: White.