Catit SmartSift Hooded Litter Box with Biodegrable Liners

I have severe chronic pain (particularly back pain) so my biggest problem with caring for my cat is cleaning and maintaining her litter box. I previously bought another litter box with a similar sifter built in but the problem with it was that you have to roll it upside down to sift it which still requires effort and strength that I don't often have. It would also need extra effort occasionally as the used litter wouldn't always fall in the right place so I would have to reach in and contort myself to get everything out. This box is completely superior to my old one. The used litter will fall into the right place every time and doesn't require any excessive effort to maintain it. You just pull the lever and it's done. The lever system can be a little bit heavy when the box is filled with litter but it's really minimal. Like it could be a bit too difficult for a child under 5 years old-ish but it's so simple and easy to use that children definitely could use it without any help. I'm not quite sure how effective the deodoriser is but it's nice to have it built in. The door system is also quite nice as my cat doesn't love being in an enclosed space for too long so we keep it open for her to stick her head out when she uses it. It's also just oddly fun to use. The only downsides I've seen is that it's quite a big box that takes up a lot of space and the entrance is quite high up so my Luna cat has to jump a little bit to get in which may be a problem for senior cats with limited mobility (Luna is a year old so this isn't a problem for me currently). I also couldn't figure out how to use the liner for the litter tray specifically but the bin liner for the waste drawer was easy to install and that's the more important part to have the liner in in my opinion. There is also a minor problem as you have to use clumping litter with it which will sometimes stick to my Luna's stinky butt and back legs/ paws but she's easy to clean even though it's not her favourite thing for me to do. Another issue with the clumping litter and these types of sifting mechanism is that the urine litter clumps can sometimes stick to the tray so I have a flat litter scoop nearby to scrape off anything stuck to the tray. I may have to properly clean the unlined tray sometime in the future but it's easy to take apart so it's not a problem for me. It's my understanding that you need to have two litter boxes for one cat and one extra for each additional cat in a household. So, because I love this box so much, I'm heavily considering buying another to replace the one I have to roll. It's somewhat expensive but it's a great option as I can't get a fully automatic one due to the cost and lack of electric power where I keep the boxes. It's definitely worth every penny and I can't recommend this enough especially for those who have disabilities or limitations that make cleaning the litter difficult.

EDIT to my original review. 6/4/2024 This worked as my original review but my kitten is now over 6 months old & I have a second kitten who is 10 months old and find that the litter box no longer works well. When my kittens do number 1 it clumps on the grate and the litter tray and then the box starts smelling nasty straight away, also my older kitten poos in corner missing the tray and it's stuck all in the crevice, I then need to dismantle and clean out completely which defeats the object. This is daily so I have bought an Omega roll litter box regular (I had looked at this before I bought the smartsift & the only reason I didn't go for it was that I thought I wouldn't be able to roll it but that was not a problem actually in the end) I have now bought another Omega box in large and I am very happy as both boxes are very good indeed, the size I have in my utility room downstairs and the regular size is upstairs in a spare bedroom. The smartsift was dismantled and cleaned and is in my garage waiting for hubby to take to the dump. I would not recommend the smartsift as it seems to only suit very young kittens and cats that don't pee & poo in the corner of smartsift or by the grate. It's a no from me. I am disappointed as at first it did work for me but then everything went pear shaped. Also when the urine clumped on the tray and grate the box really smelt bad which up to then I had not experienced bad smells from the smartsift. I hope my review helps someone in their decision on what to buy. I do recommend the Omega Paws though. I got a 9 week old kitten in November & waited to use this box before reviewing. I researched for about a 6 months before ordering this Catit litter box. I bought the grey & white model. I first thought that one of these electric powered all singing & dancing boxes were the way forward but after reading reams of reviews I was put off by the problems & faff (I wouldn't mind the expensive £500 price if they worked seamlessly) I thought why would I want to spend my time trying to solve the problems they seem to come with when the whole point is to have a litter box that saves me time & effort, so it was a no from me. Then I looked at a similar litter box which worked on the same principle but you manually roll the whole box, as I have Arthritis I would struggle with that, although it seems reasonable & cheaper if you could manage it. I then thought I would buy a large top entry simple box and just empty the box every day (no way do I ever fancy sifting poo & wee balls lol lol lol) so then I spotted this one. First I will list the the things that are annoying before I list the positives. Cons:, 1)The litter box arrived in its original box only which was battered and torn (this I thought was awful as it was not in another parcel protection brown cardboard box) this is down to the company which is why I knocked a star off as I was not impressed especially with a price tag of £100. 2) The handle is flimsy (although you can buy a new one cheaply directly from the company website) but I would prefer to pay an extra £10 to have a sturtier handle. 3) I my opinion only, I think that if you have a cat that stands close to edge of box you will have a problem with wee running over the edge which wouldn't be a big problem if the bottom waste tray didn't have a whole in it due to the way the drawer fits into and is secured. For me this is not a problem as my female kitten never stands to wee. Pros: The footprint of the box is similar to a large ordinary litter tray, where it is bigger is the height as the waste drawer is at the bottom, then the litter sifting tray is on top, around that is the hood so as long as you have a place that can accommodate the height it is not a problem. The box is easy to put together, the handle is a little stiff when first used only because it's new, so after a couple of days this loosens up. It's easy to add litter to it & to scoop out all month old litter when doing a full clean. I use a cat safe disinfectant and a cloth to give it a good clean but I only do this every 4 days when I change the waste drawer liner and no need to take hood off. I have been surprised that I have not had any bad odour from the box at all (it pongs when you open the waste drawer to change the liner on day 4 lol) I would not leave waste drawer for 7 days (company claim 7 days, as I keep the box in a bedroom this may be different if box was kept in a garage or utility room you may get 7 days before a change is needed) as I experimented when I first got it and at the end of day 4 I got a slight musty smell by the box and day 5 it was in the air not just by the box, so I think it needs changed on day 4 (which I think is amazing). The secret to getting a good result with this box is as other reviewers have said, fill the sifting tray to just below the line mark on the sifting tray and when pulling handle do it slowly, then you will not get clean litter falling into the waste tray. The box has a charcoal filter that needs to be changed every couple of months but I will not bother getting another as this box really doesn't smell 😊 I tried a couple of litters, Best cat clumping which I found clogged the sifting slatts and tracked badly, pets at home ultra clumping which was very dusty & tracked badly but made really good wee balls that just fell into the waste drawer, very occasionally I needed to tap on the sifting tray for it to fall from the tray wall, odour control was very good, Ever Clean Multi cat (even though I only have one cat) this one has a smell of fresh laundry which is subtle and very nice, excellent odour control, tracks a little & sticks occasionally to the sifting tray so you need to give the tray a harder tap for it to drop into waste tray, what I do now is I add a little pets at home ultra clumping to the Ever Clean which gives me a better result without the dust & tracking. My little kitten was 9 weeks old so I put a shoe box in front of the entrance to help her climb in & out which she did with no bother at all, I actually have a small kitten tray because I thought she would be to little to use the big one but she took to it so quickly & then within days stopped using the kitten tray and will only use the big one now. I love this box it's so fabulous , it does everything a good litter box should. I read reviews which said don't bother with a liner in the top box only get liner for the tray which is what I do and I agree you only need a waste drawer one. I use Ever Clean litter as it suits the box very well. I use cheaper waste bags for the drawer from pets at home they do a big box in large size. I recommend this tray as it is easy to use easy to clean & my kitten is very happy using it.

I love it. I know there are a few negative reviews, but I have come to the conclusion some people may not be using the right type of cat litter....this is extremely important for the 'sifting' action to function properly. I personally use 'The worlds greatest cat litter' in the red bag. I have had the tray 5 days now and it works perfectly. It also helps to keep the litter topped up to the maximum filling capacity. I judge it by allowing all the clean litter to fall in the grid and top up until it reaches the holes of the grid. This helps prevent wee sticking to the pan because of a too shallow amount of litter. However the bags are pretty useless if your cats are shredding machines, like mine are. But I don't find using the tray without liners a problem. Yes this means the toilet has to be manually cleaned, but it's been 5 days and the tray is still quite clean, with no smell of poo or urine at all. As for the liners for the waste disposal tray, I don't feel it is necessary to wait for the tray to fill up and then dispose of all the contents in a bin. I have the pull out tray lined and empty the contents down the toilet every couple of days (the cat litter I use can be flushed, as it is organic). The bags remains firmly in tact while emptying the soild litter and poo. I have given the toilet 5 stars because although I will have to at some point clean it manually, it does what I purchchased it for....No scooping ever again. Just slowly pull the lever, allowing enough time for the clean litter to drop through the grid and then pull all the way to let the soil litter drop into the waste disposal tray. YOu can then either empty right away or leave until full. I have seen people complain the pull out tray doesn't go back in properly and therefore allow the smell to escape, well I have found if you give it a litter extra push with your foot, it goes back in all the way just fine. Nit pickers don't bother with this cat tray, all the rest I say, hell yea get it, it's worth every penny

So the design of this litter box is great. However wast so good for our 8 week old kitten. The good - Great design - Easy to clean - Carbon filter is a bonus - Easy operation The bad - This thing is huge! - Entrance is very high for kitten, (had to buiild it some improvised cardboard box steps to use) - The layer of litter is too shallow (Stuff sometimes sticks to the bottom) - Dosent filter out smaller soiled clumps whic end up either back in the box or worse stuck in the litter filter - Cat flap dosent seal very well so odours get out. - We was using corn based cat litter (Worlds best cat litter) It stinks! Dont use it with this one as it needs to be cleaned out every day, ootherwise you get a horrible farmyard yeasty smell, clumping clay litter is best - Propietary linners for the soil tray could become expensive It is still a very good design cat litter, but only for specific user cases and only if you have the space for it. Although our kitten used it, it did start soiling around the house. (We atribute this to the type of litter) We will keep this box and user it when the cat is a bit older but for now we are going to use a simple high sided box with a much smaller footprint.

Ok so... this is a complicated review, but it's really necessary to explain all the bad reviews below, as I almost didn't order this because of them, and this would have been such a mistake. To summarise, this box saves me tons of time daily, as I don't have to be "hunting" for the nasty bits hiding inside the litter, and there is NO WASTE of clean litter whatsoever. Only the bad stuff goes into the bin! It's so perfect! Now, to explain some of the bad reviews out there, that to me are worth nothing comparing to the good stuff I get from this litter box: - Putting it together took a while, but after you do it once you don't forget how to do it, it's very straightforward - Yes, you do need to bring it all apart to clean it, but it's totally worth the time it saves me daily - Yes, clean litter does go in the bin, if you don't follow the instructions and put litter ABOVE the line that is clearly in there. If you do take your time to read the instructions and do it right, NO clean LITTER falls in the bin - If your cats are scratchers, DO NOT use the liners on the cat base... I don't see why would you do this with this litter box if you don't do it on normal boxes anyway... it's just a matter of common sense - Yes, if you don't use the liners, the pee litter "balls" do stuck to the bottom... Doesn't this happen already with a normal litter box? How would you expect it otherwise? I just use the plastic "shovel" that I used in my normal little box to wiggle the pee from the top and it falls straight into the box... takes me a few seconds to do this once I clean the poo! - Yes, there is smell coming out once you pull the lever, what did you expect? Underneath the cat pan base there is tons of poo and pee! Didn't your old litter box have any smell? Doesn't your bin smell from the amount of poo and pee you put in there daily? Just change the drawer bag everyday too if you don't want the smell to be down there... To be honest when it's closed I can't smell a thing. - If you use the RIGHT litter it works perfectly fine. This litter box is not to be used with normal cat litter. You need clumping cat litter, and it doesn't need to be a terrible expensive one either... We use Tesco clumping cat litter and it works much better than another expensive one I bought from the vet. It took me ages to find the right clumping litter for my two cats even with my normal litter box. If yours is not working with this litter box, you're not using the right one, go out to the supermarket and pet shops and try new ones. - Yes, you do need to wiggle the handle a bit to get all the litter back into the cat pan base... It takes me around 4 wiggles.. which is around 5 seconds... - Yes, it is MASSIVE. It occupies the space of maybe 1.5 normal litter boxes, so better make sure you have the right space before buying it To finalise... the box might not be completely perfect, but it's much better than what's said in these bad reviews. I'm so glad I risked it, thanks to everyone else that left reviews with a bit of common sense in them.

I'm Willy the Wonder Cat and my mum thought she'd make all our lives easier by buying this tray. It sounded a bit too good to be true and I can report that from a cat's perspective it was also somewhat lacking. It just has too many issues for us and these far outweighed any perceived benefit. For now we are back to our original tray as Mum has arranged for the chaps from DPD to take the Smartsift back to Amazon HQ. My mum is a qualified cat "doctor" so needless to say she did plenty of pre-purchase research on this tray which included phoning the UK distributor to find out the most appropriate cat litter to use with this tray. Apparently Catsan Clumping Litter was the litter of choice as the litter used on the CatIt demonstration video is only available in the USA. So here are the issues for cats: It's a MAMMOTH unit but has MAJOR ACCESS issues! From the outside this unit is absolutely HUGE - something my Mum was prepared to get used to if it did a good job. If your cat is actually big enough or agile enough to actually get inside the tray then the interior is actually on the small to medium size. I am a tall cat 5kg long-legged male Siamese. I must say though that if I was in any way smaller or less able (like a lot of older cats) then this litter tray would be useless. In fact my spritely 16 year old "sister" is a 3kg Burmese cross. My Mum even fashioned a step to help her access the tray but she is still not able to get into it on her own. Issues for Cat Owners: It's VERY SMELLY! The plastic waste drawer is meant to catch the waste and is designed to be changed weekly. I am not sure how others have gotten on but the plastic waste drawer we received was warped at the front so there was not a proper seal on the unit - the not-so-sweet aroma of 1-2 day old "business" wafting out meant Mum couldn't bear to leave it longer than 2 days. It WASTES CAT LITTER! The litter tray liners have a major design flaw - folded pockets that trap substantial amounts of the unused cat litter - when you tilt the tray these fall into the waste tray meaning that you lose loads of clean litter each time you pull the lever. We also found that the clumped litter adhered to the bag and required manually removing - which kind of defeats the purpose of the whole idea of the tray really. Oh and if you have razor sharp claws like I do then the bag gets progressively more shredded with each use. It has FLIMSY FITTINGS The plastic hinges on the sieve/sift attachment were so flimsy that they kept dropping off whilst Mum was changing the litter. The plastic clips seemed equally flimsy and I guess it is rather difficult to know after only 10 days whether they would stand the test of time or not but we didn't feel optimistic with our experience. Back to our traditional extra large tray and handheld scoop! >^..^<

Okay so I'm going to give an honest review because I had this for a month with two cats and I REALLY REALLY wanted it to work and be this genius litter box I could show off about but sadly it was not. So putting it together is super straightforward. The principle of the mechanisms is there it just doesn't follow through. So I bought all the liners and I spent £40 on two different types of litter through this process trying to the best kind without the least amount of smell and the right clumping for this machine because like I said I REALLY wanted this to work to save on litter cleaning time and to feel like I've achieved something great as a poop scooping cat mum! The shifting of the litter needs to be done extremely slow which is fine but even then you lose over half of your fresh litter into the bottom bit and the clumped litter doesn't always fall into it. Where the litter shifts through also gets clogged with litter and pooh. I used triple the amount of litter I have ever used with this box and it took triple the amount of cleaning. The smell is also awful. I've never really had issues was the dreaded cat litter smell before so this was a surprise given how spectacular this was meant to be so that was even more of a blow. I spent money on a super fancy litter for this to start off with and then switched to a super fancy fine clumping wood pellet litter two weeks in to see if that would make a difference with smell but once again it was the same issue losing over half the pan of litter each time and pooh getting stuck in the shifting area. Not only that but this thing is HUGE! The images are 100% deceiving. I knew it would be slightly larger than normal but it was MASSIVE! Overall I was pretty annoyed I'd spent so much money on this piece of crap and ended up replacing it with a normal litter box again. The idea of this is great, it just doesn't work. Zero stars

I spend some time researching various litter trays where i woul.dnt need to be scooping poop alot and thought this one would be very good and in theory it is but, here is a list of the issues i had with it which is why i have now returned it and gone back to a basic hooded litter tray which is actually far easier. 1. The interior is actually alot smaller than it looks there for the kittens would have soon grown too big to be able to use it easily. 2. They dont recommened a litter to use with it so i tried several with varying degrees of success. The first one i used, the granules were too big to go through the gril so it all kept getting blocked up, i then tried Worlds best clumping litter which was £20 a bag! This is a very good litter but i was finding every time i tilted the pan not only did all the clumps go though but alot of the clean litter did aswell. At £20 a bag i was not going to waste so much so i had to keep cleaning the base pan out to recycle the clean litter that had gone through the grill so this became alot of hard work. I contacted Hagen to tell them of my problems and they recommended a premium clay clumping litter, this was not quite so bad but that brings me onto the next problem. The tray inside has a liner bag which is ok but because of the folds in the bag it reduces the area the cats can go in and it also puts them off digging etc as they get caught up in the bag. I decided to remove the bag but then the clay clumping litter then stuck like concrete onto the plastic so i had to keep scraping it off and cleaning the tray so this was no good either. On top of all this and to be blunt, if the cat does a slightly sticky or runny poo then it all sticks to the grill when you turn the handle to rotate the pan, once again i had to keep taking it apart to clean it. The design is a great idea but in practice it just didnt work for me. I am now using a good covered large litter tray and have bought a cat litter bin which i just scoop the clumps into so there is no mess or nasty smells and i am much happier with this set up and my cats certainly prefer the larger area of the tray.

This litter box was quite easy to put together and seems to be a simple but effective design. The entrance is quite high, so we have built a step for our younger cats, and have taken the door off. I love the window on top to view how it is working so we are not sifting blindly. It works a lot better if you go slow and shake the handle a bit as you go. Doing this highly decreases how much clean litter gets dropped into the bag. While it is not a completely automatic litter box, it is a great choice, and it is so easy that the children in my house can do it as well and don't complain! For information sake 3 cats: 2 yrs, 10 weeks, 10 weeks. 5 people cleaning: 3 adults, 6 year old, 9 year old.

Jätte bra produkt! Funkar super med Ever clean kattsand. Värd varenda krona! Med ett enkelt drag i spaken så trillar avföringen ner i behållaren och ny fresh sand åker tillbaka när du drar tillbaka spaken. Vilken gamechanger jag är så nöjd!

I have 4 small cats that are growing very quickly. Cleaning the litterbox was a pain as I had to clean it about 2 to 3 times a day. I've bought two of these litterboxes and I'll tell you right now... I AM NEVER GOING BACK!! It's so easy in usage, cleaning is a breeze. Even if you only have 1 cat I still highly recommend the investment. Pro's No scoops or digging into the litterbox One move of the handle and your done Instead of cleaning the entire box you can just add some litter The entire process of cleaning takes me 10 minutes tops for both litter boxes Con's The handle can be a bit rigid given the weight (Droppings and litter) Their pee will clump onto the bottom (If you don't use a bag in the top tray) The box is rather large and has a high step (Can be an issue with smaller cats and kittens)

I absolutely hated every second of this product. I am very upset that I am not able to return it. It doesn't work advertised at all, it is extremely bulky and poorly designed with terrible quality plastic. It requires you to manually go and clean every single time.

After having owned countless numbers of litter boxes over the years, this is without question the absolute best one I've ever owned. Yes, that is high praise. Particularly if you consider that I was very hesitant initially to purchase this sifting cat box due to the wealth of mediocre reviews submitted here on Amazon. In my previous experiences, I generally could count on the reviews from loyal Amazonians (whether favourable or unfavourable) to be very consistent with my own experience. So in spite of such reservations, and somewhat against my better judgement, I decided to order it anyway. For about $60, I figured that if it didn't meet my needs, at least the investment wouldn't be too extreme. I had also planned to try the Litter Spinner as well. If the SmartSift proved unsatisfactory, then I'd turn to the Litter Spinner in my quest for kitty litter purr-vana. In the past, all of the new and innovative boxes I've used ended up being replaced by the obligatory cat pan that required constant and tedious cleaning. I was looking for a better, more clever solution. One previous purchase included the Omega Paw box that you roll (tip the box over) to sift the waste from the clean litter. It lasted about 1 week before I just started using it as a regular litter box. Why? The clips holding the sides failed, and the design seemed poor in overall quality - such that when I rolled the box, litter would spill everywhere. And the actual act of physically rolling the entire box was just awkward and cumbersome. I had also purchased an earlier iteration of the Litter Robot. At first, it seemed like the Holy Grail of litter boxes. But it wasn't long before I encountered electronic gremlins. While walking by it I would suddenly notice an array of flashing lights that reflected annoying and all-to-common technical glitches......which invariably led to lots of frustration and troubleshooting. A common one involved the drum stopping half way through it's cycle. Or issues related to the sensitivity of the step entering the drum. And these weren't the only problems. The waste bin was small and needed to be emptied frequently. I remember at the time wishing for a manual version of the Litter Robot that allowed me to rotate the drum by hand (cue foreshadowing music) to completely bypass any temperamental electronics. In effect, I was left wishing for NO circuit board, manual control, and a $300 reduction in price. Of note, apparently, the newer versions are more reliable. But I don't want to risk gambling more than $400 again to find out. When the financial loss was factored in, it ended up being the worst litter box I'd ever purchased. Ultimately, I ended up reverting back to the tried-and-true litter pan. Next, I tried the CatGenie. I was once again hopeful that this would be the one. It was clever and innovative. But my cats simply would not go near the thing, even after painstakingly and carefully exhausting all of the suggestions the manual offers to coax cats into adopting it. On top of that, I found that when transferring hard waste from the regular cat box into the pan of the CatGenie and running a cycle, the filtering shovel would automatically shake to remove excess plastic litter before dumping (like it's designed to do), but then shake the waste off the shovel as well, and back into the pan where it would eventually be heated during the drying cycle and baked into a smelly Easy-Bake-Oven-like brownie. These issues and the fact that the consumables were too costly, had me unfortunately, once again, reverting back to a simple cat pan. So after reading through all the reviews on this site, I wanted to make sure that I was well equipped, and well prepared to try this litter. If it didn't work, I wanted to make sure that it was due to the box itself and not anything related to the quality of the litter. So based on suggestions, I made sure to buy some Exquicat Crystal litter, as well as some Arm and Hammer Clump and Seal, and threw in some Precious Cat for good measure, as these products seemed to clump well according to claims on Amazon. My regular litter is Odour Buster clumping clay cat litter and is fantastic. Still, I wanted to have some options available should troubleshooting be necessary. My experience? I have the litter in my basement near the washer and dryer. First of all, I never use the plastic bag in the little pan itself - even though it's recommended in the instructions. As many have suggested in these reviews - the box seems to work much better without it. I only use a plastic liner in the waste container. I also removed the cat door as well as the filter at the top of the box to allow more light to enter inside, thus more closely mimicking the openness of the cat box my cats are more accustomed to. The door and the filter just seemed completely unnecessary to me. Removing them also allowed me to monitor the litter level better which made it easier to replenish the pan with fresh litter when needed. I love the fact that I can simply free up the handle and SLOWLY rotate it back and forth to sift. Nice and simple. Just move the handle, not the entire box. Brilliant. Just make sure to do it slowly, and to NOT overfill the litter pan. Otherwise - you will waste fresh litter when you sift. The quality also seems very good. When assembling the product, make sure to insert the arm into it's slot with some deliberate effort to help prevent the arm from loosening later during use. I find this box to be easy to disassemble and clean. Everything just seems well thought out. It's hard to believe I'm saying this, but I actually enjoy sifting the litter now. The box also stays cleaner longer and my cats seem to like it - they acclimated to it very quickly. I have used the Odour Buster litter exclusively (there has been no need to try the other litters) and it works well. Occasionally there are clumps that hold a bit more tenaciously to the bottom or side of the pan (as described in other reviews) but I use my litter scooper to quickly dislodge them when this happens. It's quick and painless. And to be honest - such sticking has always been a common occurrence with any litter pan I've owned - so the SmartSift is no different here. I also love that the waste bin is large. I was thinking that another SmartSift might be necessary with 3 cats, but I'm finding that I can easily get by with only one. I empty the bin each week and toss out the waste with my regular garbage. I'm also pleased that the smell is virtually non-existent. Granted, this might have something to do with the litter choice, but the reasonably well-sealed bin certainly seems to help in this regard.. A big surprise for me is how much money I anticipate saving over the long-term. So far, it's looks like I'll be cutting my litter costs by 2/3rds. I was wasting so much litter previously. This is definitely, an extra, unanticipated perk. Overall, as you can tell, I'm very pleased. So pleased that I've purchased another one as a gift for a friend who has 2 cats. What would make the SmartSift even better? It would be great if it was offered in a slightly larger version that allowed one to add more than the normal 3" or so of litter to the pan. With that said - I've noticed that many reviewers here have commented about how inconveniently large this box is. Ironically, many reviewers have also complained that the interior litter pan is too small. Changing the size of the pan would likely increase the overall size of the box too. In addition, some cat pans are now available with slick, non-stick surfaces and this would make the waste fall even better into the lower bin. I see this as the single most important simple improvement that could be made to enhance it's functionality. Aside from that, there is really little to criticize here based on my experience. If any issues appear, I'll make sure to update this review. *Update* - April 8, 2017. I have now owned the SmartSift for 3 months and still absolutely love this litter box. Is it perfect? No. But neither is a brand new Honda Civic. Yet, just like a Civic works so much better and represents such a large technical leap in convenience, efficiency, and functionality next to a horse-drawn chuck-wagon - it's hard to resist feeling like this product represents a revolution in litter boxes. It's my hope that the design will see incremental improvements over time to address what I view as minor flaws in an otherwise excellent time and labor-saving litter pan. My suggestions for improvement outlined above - in my original review - still stand. Overall though, I'm very happy with this product. And so is my friend who I purchased another one for - also mentioned in my original review. Highlights? Well, I've just run out of my first bag of litter a few days ago, so I effectively reduced my litter use from one 15 kg (33 lb) bag per month, to one every three months using this box. Considering the reasonable up-front cost of this product - I have saved almost enough in 3 months in litter alone, to cover the initial expense of the box. Not only does the SmartSift save time and effort, it's also saving me money, and reducing waste.