Purina Tidy Cats Non Clumping Litter System, Breeze XL All-in-One Odor Control & Easy Clean Multi Cat Box - 18 lb. Box

I've been using this system for 3 years now. There are some flaws which I'll mention but I've been through so many different setups over the years and haven't found anything I like more. With that said, just looking at the negative reviews it's clear that part of why I love my setup is due to other things I've done as well so I'll outline that in case it helps anyone else.I've placed this inside an IKEA drawer unit on wheels (I think it's the SMÅSTAD unit) for easy cleaning. I cut out a portion of the back for the cats to enter. I use a puppy pad underneath the front side and I have a Litter Genie off to the side.To clean, I simply scoop the poop into the litter pale and rotate the litter pad tray. I set it up on top of the drawer unit so I can pull the tray out on bottom and rotate it or replace it. It's very easy to dump everything into the garbage and start fresh when needed.The drawer helps to contain any smell and the pellets. It's easy to sweep anything that doesn't stay on the puppy pad. The main reason for the puppy pad underneath is because there have been a few times a cat has peed, pooped, or puked over the edge (mainly our two elderly cats that have now passed). It just really simplifies cleanup.You will know you have waited too long to replace the litter pellets if it really starts to smell bad when you pull out the drawer to clean. I exclusively use the multi-cat litter pads because they hold so much more than the regular ones. I tried some different ones on Amazon and they all suck. I found that only the official ones actually contain the smell or absorb as much. I also buy the 7 lb bags of pellets because it's more cost effective and allows me to add a little extra or top off as needed.So far my biggest complaint is that you have to make sure you place the litter pad perfectly centered with the edges on all four sides sticking up against the side walls of the tray. If you don't, you will end up with pee underneath the litter pad. I really wish it had a locking mechanism to clamp onto the sides. But I've gotten pretty good at it and have only had that particular problem probably 4 times. Somehow it's also been possible for pee to end up in the little dips next to the handles a couple of times.Another small issue is that if the cats pee too much in one area of the multi-cat litter pad it will swell up big enough to press against the bottom of the grated area, soaking anything above it which can make things nasty. A tiny bit more height or less absorbent litter pads would avoid that.My final complaint is that over time some powder from the pellets along with specks of feces do build up in the grate on bottom. When I go to dump the pellets into the garbage can and put new ones in, a bunch of it falls to the floor which can be a bit gross. I've tried taking the whole bottom in along with the tray but then the litter pad slides forward, bunches up, and jams the tray. Then it's a mess on a whole other level. Thinking about this again, I might try just holding a small trash liner or a piece of cardboard underneath next time and see if that solves it.In the end, this works better than anything else I've tried to contain mess from litter, contain the smell, and simplify cleaning. Every time I've done the math this ends up cheaper than anything else I've tried so that's just the icing on top.

21/7/18 - FINAL ADDITION!I have been using these boxes for over 18 months now and I can honestly say, that I cannot see myself every using another option. Until recently, I have had three boxes on the go. But I lost one cat in January and my oldest boy mid-July, so now I am left with one cat and just two boxes.With his brother gone, Maggi happily uses both boxes freely (one was sole domain of the older cat) and spreads his efforts between the two.These boxes are simply the BEST THING AROUND:YES, you can wash the pellets (although they DO start to retain some of the urine smell after a number of months). I still have some original pellets remaining, but I would say that, with cleaning, you're looking at a 4-6 month replacement process. You will also need some spare pellets to replace those that are wasted in cleaning them out each day.YES, you can use other pads in the base - I have tried two different types - generic copies and those designed for humans (to put in the bed - and cut to size). I keep some of the human pads around for emergencies (if my quarterly delivery has not arrived), but the generic ones are not much cheaper than the originals, and they smell more.As others have said - on a monthly basis, drop pellets in (bleach, diluted floor cleaner, Fairy Liquid solution) and hose/shower down the four pieces of the box (a 10 minute process at best).Because I have spare pellets, I refill the boxes with these and leave the dirty pellets to soak for about 24 hours. I then sieve them out the next day, rinse them down, spread them on a tray (now I use the spare green tray from the third set) and let them air-dry. They are then bagged up and ready for the next month's clean.---APR 2017EDIT - I gave up trying to migrate the cats (see below) and just gave them just the BREEZE option. They took to it immediately and I've never looked back. I have 3 cats and 2 trays. They tend to pee more in one and poo more in the other, so the pad is replaced more frequently on one of them. That said, 2 pads last approximately 1 week each.Three months into using them and this is what I have observed:• THERE IS NO SMELL - I literally have to be sticking my nose in the saturated pad before I smell the pee. I actually have added a calendar reminder, because once or twice I've forgotten to replace them. The cat's noticed, but I didn't• YOU CAN REWASH THE PELLETS - I have done this twice now (fabric conditioner, warm water, a nice long soak and agitation with gloved hands) and seen no detrimental effect. I cannot guarantee that you will use one bag of pellets forever, but I am in my 3rd month and the only addition to the trays is a sprinkling to augment the few pellets that don't shake off the poo. It's a bit of a chore, but saves the pennies.PADS - I have tried human pads (larger , and designed for beds). They work, but I need to change them daily. A cost-per-day comparison showed them to be pennies cheaper, but the smell increased and they were often soaked so much that pee was flowing the following morning. Use the Breeze pads. They work out (for me) at 28-30 cents a day for three cats.• NOT LEGO - When you tread on them barefoot you notice, but it's hardly the Lego experience that some complain of. They are small and rounded. Sure, I'd prefer NOT to stand on one, but it's fine...• CONSTRUCTION - The four parts (tray, base, filter and surround) are thick plastic, not flimsy at all. 2 of my cats love to dig and no more than a handful of pellets come outside.• COST - OK, these pellets are not cheap, but they outlast regular fullers earth, or clumping litter by a massive factor, making them 'slightly more expensive' that regular options. Factor in the washing option (if you go that way) and they are totally comparable. Even without the washing option, the saving savings made with air fresheners etc, PLUS the fact that the smell is non-existent also has a value.I can see how some cats may not like the transition, but mine are happy with them and, as someone who has used a range of options, this is by far, the best I have ever used.---ORIGINAL REVIEWIt's not the fault of the product makers but, after two weeks, my three cats are only now considering these as legitimate areas to do their business.It seems that under the bed, in the middle of my freshly dry-cleaned duvet or in the shower were more obvious replacements for their old and tired regular trays.That said - the product is well made, well considered, offers sound advice and is a self-contained unit ready to work in two minutes.It's great - My cats are not...