I first discovered this stuff from our vet who gave it to us (well, sold it) for our dog, Reilly, who likes to eat our cat Cooper’s poo. (Our litterbox is enclosed, but we have a dog door that leads to an enclosed dog run that Cooper has now decided is even better than his litterbox in case you’re wondering why we didn’t just move our litterbox to a more secure spot.) Anyway, we find that this works wonders–it’s fast and efficient. I ordered this package of it from Amazon because Reilly recently started up again with the poo. Reilly is a stubborn dog anyway and I’m guessing that taking it for a few days isn’t going to cure the problem on a permanent basis, but this way we have extra in reserve so when we see the problem start up again, we can give the dosing again and voila! no more poo breath! I would definitely buy this again and probably will! It was cheaper than buying it from my vet, too.