I use it, the rescue uses it. It's good for all kinds of things, not just animals but we use it for the dogs and cats here when we can get it. (It IS pricey) When using it to de-worm it cuts up the worms into little tiny pieces making it easier for the animal to pass. It also helps with diarrhea. It will get soft poop solid fast. It does the same thing to fleas as it does to worms. Lightly dust your animals with it and fleas go bye bye lol. I love it...it works wonders...it's just not that cheap lol.