PDZ Fresh Coop is the mineral zeolite that absorbs ammonia.
Best to buy the horse stall refresher bags of 25# or 40#,
it's much less expensive and is the same exact thing.
It comes in powder and granules, the granules are much less dusty.
Sweet Coop is also zeolite, marketed by that chicken chick.
Doo Kashi is snake oil IMO.
"DooKashi is a litter additive that is designed to eliminate litter box odors and reduce harmful pathogens at the microbial level. Made from natural ingredients (wheat bran, probiotics, blackstrap molasses and purified water,)"