I like the system very much in terms of dust and odor control. My kittty took to it on the first day. There's minimal tracking and the system effectively tackles the urine smell. I have a kitten and his poops really stink but they're solid so no big deal. My problem is that even though I wait for the pellets to absorb the fecal matter before scooping (which I wish I could just scoop up and throw out right away), I still lose a lot of pellets due to them sticking to the fecal matter. I've had the system for about a month now and I know the recommendation is to change the pellets once a month but I can't help but to feel that there's simply not enough pellets to last a month. So I added additional pellets after a couple weeks and if I continue doing so, litter replacement will burn a serious hole in my pocket. If anyone has any tips or advice, I'd really love to hear! But aside from the concern for loss of pellets due to sticking, I think the system works very well.