Hi, it's a real experiment about two auto litter boxes! #1 was difficult to clean and had a problem with turning to bring old trash every time out of the plastic bag, so it was an extra mess, but it was odor control, easy access for kittens, a good application, and easy sync to the network; I returned it because of the cons! So, I found this one; when I got it, I was so excited since it is easily open and easy to clean, and it does not work all over turning and doesn't have the problem with the last trash. Still, I tried to start it; I can say syncing to the network got 3-4 hours of my time, then after syncing, it's an application from maybe ten years ago!!! It's so old without a monitoring option and getting notification of the cat entrance, at least! All in all, its application is useless! I was like, never mind, having an application is unimportant to me! So I put litter to use, and it started to work with a very loud sound! And it is hard for my kittens to access ( while it says it's ok for more than 3lb), but it is so high! Anyway, I was like ok, I put a step for my kittens, and I did; I was still trying to accept this machine cause I really needed one automatic litter. But a big problem happened! There is no odor control in this product! The trash bag is all open under the machine, and the stinky smell didn't Let me sleep all night!!!!I hope one company mixes these two machines that I have experience cause they can complement each other to be useful for consumers! By the way, I had the last machine for 3 weeks and this one for one night!!!! But it bothers me a lot! Cause even the open litter box doesn't have this much smell!! It's like you have a trash basket of cat poops with an open door all day!By the way, just one day! And I can't bear with it!I give it two more days to see what happen by the company support they have any solution or not and put the update! So far, I don't recommend it!