"There is no such thing as the perfect litter/litter box. I'm still waiting for that to be invented. Pros: The Breeze system is awesome at containing the urine and the urine odor -- so good that I've forgotten to change the pad for more than a week, because I don't smell it, and when I remember, it's so full and heavy, it feels as if urine will come pouring out of it (it doesn't though). Virtually no tracking and no dust. Cons: My cat really likes to dig in the pellets just like any other type of litter, so a single bag of pellets is totally inadequate. 2 - 2.5 bags of pellets is required, & the pellets do get kicked out when he's digging. With the pellets & disposable pads, this system is not cheap. The pellets do NOTHING to disguise the smell of #2. Even though my cat digs, most of his #2 still sits right on top. Not only can we smell it as soon as he does it, we can see it right there on top. Even though it stinks, you can't scoop right away. The #2 needs time to dry out. Scooping #2 immediately will result in a nasty mess on the scoop and the pellets. Not even a proper hood for this cat box to, at least, cover the sight of the contents. You have to buy an after market cat box cover or a privacy screen or something. Eewww. I've tried the Littermaid automatic cat box, and the roll & clean cat box -- with both of those, I ended up going back to a standard covered cat box with clumping cat litter. I've tried crystals, too. The #2 problem with the Breeze system is enough to make me go back to clumping cat litter again, but I'm no fan of the dust and the tracking that comes with that, either. If your cat's #2s don't stink to high heaven, maybe you'll like this system."