Better to stick to regular litter boxes
591125
It's one of those products that sounds good on paper and works ok for a short time, and then it's all downhill after that and you're wondering why you bought into it. My kittens don't mind using it when it's very clean, but after 2-3 uses it gets very dirty and you can't clean it like a normal litter box. It doesn't hide the poop like regular litter, so the cats think it's always dirty. Also, I constantly have to clean the rake because there's always poop getting stuck to it. The refill trays get expensive quickly, especially if more than 1 cat is using it.

It also gets smelly, if not more so than a regular litter box. So overall, it's more hassle than it's worth. Neat idea, but not there yet.
3082459
My problem semi-feral cat uses the litter box more appropriately when this is plugged in nearby. It's pretty pricey but fewer litter box accident clean ups is worth it.
164264
I have the scoop free and for some reason this litter makes the poop crumble instead of scooping it into the end. If you have regular litter box, probably works okay.
2329859
I have been using this box for about three weeks, and have become very frustrated. Because the front, right corner does not actually fit into the slot, I had to tape the box shut to avoid it spilling large piles of little on the floor every time I clean it. However, No matter how many times I roll (yes, slowly), smack the bottom, and throw out the waste, there is alway some left. So I have to take the tape off every time to finish cleaning the box, as well as when I have to add new litter. I should not need to tape together the box in the first place, nor should I have to worry about sticking my arm in the hole to push around the litter with a scoop to make sure it all comes up when I tilt it. I may as well bother with actually scooping the box at that point. I got this box to avoid the eyesore of an open litter box in an apartment, but considering how much time and energy I waste getting this thing to work I'm going to go back to using a regular litter box, or buy another covered one.

One star for design (which is smart, if it worked as easily as everyone claimed), and one star for how much better it looks than a regular box (though it is large). But minus three stars for how much of a pain it's been to use.
2028751
I tried tipping it over fast, slow, and at a regular speed, but not just the soiled litter falls into the scooper. Lots of clean litter does too, which is just a waste. I have since taken out that part of the litter box and just scoop it out myself. I was so excited for an easier way to clean her litter box, but was thoroughly disappointed.
980812
I gave this litter box 1 star because it functions as a litter box.  I gave it one more star because it is more pleasing to the eye than most litter boxes.  But, from an engineering stand point:
1.  Why didn't they make this square?  It is more difficult to get the litter scooped than from a traditional rectangular litter box.  I also have never been able to get the lid completely on there properly; it just kind of rests in a near proper position.
2.  There should be a divider that goes up to the lid that actually forces that cats to use the stairs instead of just hopping over.  My cats do seem to use the stairs and they serve their purpose, but I've seen other ones that don't.

Bottom line, I would't spend my money on this again until they fix these problems.  The good things don't outway the frustrating ones.
3303215
I was hoping to keep my cat from tracking litter everywhere. It does help a lot with this. However, it's a pain to take the top off to clean it, which is large and awkward to lift.

The filter-holder at the top kept coming unclasped which made the dome-shape much smaller for my cat by hanging down in the middle of the box.

My cat also never quite figured this box out. Sometimes she was feet-in the box, but peed on the stairs and it would pool at the bottom of the stairs where she would then track it through the house. The oval-shaped litter area isn't super intuitive for my cat to use and the corners are pretty useless and hard to clean. I gave this away and bought a Nature's Miracle Corner box instead which I like more.
2918616
I ordered this in Large because I have a Maine Coon kitten who I expected will get larger and honestly, by the time everything is put together, the size of the litter box is a lot smaller than I thought it would be. Also, I have found no matter what type of litter I use, waste gets stuck to the bottom. The idea of the "self-cleaning" actually worked pretty well, however, for the amount of rolling over to get the waste into the drawer, and the amount of soiled litter that would go through the filter area was a pain.
110824
Pro:  My cats used this box without a problem.

Cons:
The sides are so low that even my girls peed over the side.  It wasn't fun to clean up puddles of pee that had unknowingly flowed under the box.
The pads have to be changed frequently, especially if you have more than one cat,or you have a tray of flowing liquid to balance.
When the tray is pulled out to change the pad, the unit drips from the top.  Well, to me scooping litter pans is much preferred to wiping up pee and cleaning the entire bathroom floor 3 times a week.
The supplies are pricey.

Results:  I gave both of mine away!!!  Going back to Dr Elsey's Precious Cat mixed with a little Fresh Step.
2814157
In my opinion, Yesterday's News does not work well compared to clumping cat litter. I only have one cat, and after a day you can smell the odor pretty badly (even with our filtered, covered litter box). The large pellets do not cover the feces at all, but they do absorb the urine. Another thing is, you pretty much have to empty the whole litter box every time you change it because you can't use a pooper scooper very easily. I would definately recommend getting a clumping litter instead, unless you are allergic or something.
3719212
I have 4 cats and usually use Crystal/Silica litter in one of our litter boxes as it is in our master bathroom and it is better for odor control than normal clumping litter. I tried this as it's flush-able, thinking that it would work for our setup, and I could just flush the scooped litter. The problem is that it's very hard to scoop. I have a good sized scoop that works for large crystal litter, but sifting the wood litter was very difficult. It clumps, yes, but when trying to sift a clump it falls apart easily and goes right back in the box. Then when you try to flush it, it absorbs the water quickly and falls apart in the toilet, resulting in multiple flushes to get it all down. It also tracks horribly; finding wood shavings around the house isn't fun.
2392132
It was a good idea, & worth a try, but it just makes a bigger mess & a bigger hassle. Lifting all the litter is much heavier & more difficult than scooping. The wall isn't high enough to stop male cats from peeing backwards onto the wall. Tossed it out & went to a medium sized Rubbermaid tub instead. 12 lb, 8 year old cat jumps in and out with no difficulty, no pee & litter on the floor.
2419840
We have been using this litter box for about a month now.  It is better than a regular litter box, but still not great.  I use Tidy Cat clumping litter, and I still find a lot of the "clumps" get stuck to the side of the litter box.  I end up having to use the scooper to loosen those clumps to keep the litter box clean.  Like I said, it is better than a regular litter box, but I still may end up buying the Scoop Free box.
4455522
I am not as happy with this litter box as I thought I would be.  My cats have been using this for several weeks now and at least once a week one of my cats "misses" and urine ends up on the shield (inside and outside... I expect it on the inside of the shield, but not the outside), the floor, and the wall (depending on what angle he is facing).  I was so optimistic by the reviews that I may only occasionally (if ever) find urine outside of the litter box that I am very disappointed.  I am very tired of cleaning urine from the floor and wall.  I cannot get a litter box with a hooded cover because my cats will ambush each other when one is using the litter box.  This seemed like a great alternative.  Perhaps it would work better if the walls on the shield were just a little bit taller.
1989015
We liked the idea of the scoop-free litter box and were impressed by how well the mechanism works. But we did not like the fact that the litter is merely pushed under a cardboard hood that does not--and cannot--keep odors in, even in our well-ventilated room. We found we had to remove the litter everyday anyway to keep odors down and it's much more cumbersome to scoop under a hood than in an open litter box. So now it sits in our basement along with 6 refills we had ordered for it, all so heavy that I don't want to go through the trouble of returning them.  Very expensive experiment.
1701907
At first I liked this litter box, mainly because you can't tell it's a litter box, which is pretty cool. However, after having it for awhile, I realized some major cons:

1) The box is circular in shape, so you can't use litter box liners. I've never heard of circular-shaped liners - has anyone? If so, please let me know! So this causes the litter to clump in the bottom. After a week or 2 of scooping, a thick clump of litter mixed with kitty mess sticks to the bottom! YUK!
2) It's really annoying to take the top off every time you clean it. I have to clean the box at least 1 x per day (not sure if that's normal, I have 2 cats, and they go to the bathroom ALOT). So I leave the top off most of the time. The only time I put the top on is when I have company over.
3) The smell, OH THE SMELL! I have the litter box in my 2nd bedroom, down a short hallway from my living room, but if one of my cats goes #2, you can smell it when you're  in the living room. Now this is when the top is OFF, you def can not smell it as much when the top is on, but again, it is highly inconvenient to take off the top on and off on a daily basis. Those stupid palms are kind of heavy.
4) If I had a do-over, I would not buy again. I would spend a little more on a high quality litter box.
1682465
I have 4 cats in my house. My biggest cat (a 14lb alpha male) also happens to be my leak tester, as he is prone to standing to do his liquid business. He is the reason I gave this only a 2-star rating, as well as the reason it got 2 stars instead of only 1 star.

Pros:  1.  The box is a good size. The depth (front to back) and height allows my big male to do his business in his own manner. He actually prefers this box to another I purchased from a local pet store, I think do to the height.
  2.  The lid is clear. Although it took a day or two for them to get used to the clear top, it is easy to see in for checking to clean.
  3.  The opening is low enough that my elderly (15 and counting) female is able to get in and out. As you can see, it is also rounded, which I think she also likes

Cons: 1.  The box is flimsy. The plastic is thin, and I would not attempt to pick it up off the floor loaded with litter, both because of the thickness of the container, and the flimsiness of the latches. Which brings me to the next point.
  2.  The top has no handle to lift it with. When you go to remove the lid for cleaning, you have to grab the sides of the lid, or the front opening. This forces you to possibly come in contact with the (liquid) contents inside the box, which brings the next point.
  3.  The lip around the top inside, which is supposed to keep the liquid from leaking out, is only 1/4 inch. My very strong male has no problem testing how much he can force behind the lip, and therefore out the back and sides (including the latch area) of the box to the floor. The other box I purchased locally has a 1/2-5/8 inch lip around the inside. So far he has been unable force a leak.
  4.  The shape (oval as you can see), discourages thorough cleaning unless you are cleaning with a spoon Most scoops I've seen have a flat edge, and are unable to get into the curves of this box.

I purchased 2 of these litter boxes. Unfortunately one of them didn't even make it thru the modification stage (modified because they are NOT leak proof). I probably should have  returned them, but I kept one because my big male likes it (when he's happy, I'm happy).
If you have docile cats, and clean your box with a slotted spoon, then these boxes may work for you. For those of us with dominant felines, keep looking.