Pros: Comes in unscented, works well, inexpensive.
I've used this product in the past, when my then kittens had diarrhea issues and it really smelled. I've seen excellent reviews on Amazon, so I decided to get it, despite what I've heard about other Hartz products, which weren't so good. To my surprise, it does work well, even if you have clumping litter. I've sprayed it high over their litter box area anytime they finished eliminating #2s, and even closer--maybe about a foot above the box and it had a very dramatic effect, considering I live in an enclosed small apartment and rarely open windows when it's cold outside in the winter months. I love that they had an unscented version, because I'm also not a fan of perfumey products. If you're like me in that respect, you'll probably like this. However, I no longer have a need to purchase this since going on a raw diet for my cats. It's still great and handy to have on hand, though, we never know when our kitty will be sick and have smelly stools.
You can also buy this at some select Walmart stores. Just go online first to check if it's supplied in your area, or find one by choosing other stores you could drive to. Hope this review helps those feline owners with IBD or other mecical conditions causing cats to have loose stools.