First off, I have a fractured spine. It was getting too painful to bed over, kneel down, and clean the litter box that I had made for my little feline friend Cleo. I saw an add for automatic litter boxes and hadn't realized that they had come so far since they were introduced. I spent two days watching reviews and going over features. The ELS Self Cleaning Litter Box is the one I decided on. There were cheaper ones, and more expensive ones, but this one had all the features that I was looking for. It's price was fair and it had a discount coupon so I decided to give it a try. I am so happy that I did because it was a life changer.The first decision to make was the design of the box. I decided that the Rake System was the better choice over the, spin around, types. The spin around kind all have a soft rubber liner that would have to be cleaned. They also have a lot more moving parts that can fail. Many of them also seem to suffer from urine leaking at the base of the liner. This doesn't seem to be avoidable because the liner is flexible. The rake works really smooth and the timer can be set to go off whenever you like. My cat is also a digger and I thought she would probable tear through the liner.The ELS was one of the few litter boxes with an automatic door on it as well. This keeps the sound of the rake down and the smells in while it is being deodorized and cleaned. Once the door is closed and it is done cleaning the UV lights do their work to sterilize the box to further reduce odors.It also is the only box I could find with such a large step in the front. I am glad I picked this one because the best litters to use are very lite, like fine sand. They track like crazy but work very good at adsorbing and clumping the waste. The step helps catch about 80% of the tracked litter before it gets to your floor. The grate comes off the step very easy and allows you to put the litter back in the box.I haven't used the sleep timer at night because it is not that loud. It is right next to my bedroom and I don't notice it at all.My cat doesn't dig like she used to because she isn't trying to cover up, move, and find a new spot to do her business. She also doesn't shed as much and her coat is a lot softer and cleaner. The reduction in shedding is because she was stressed from having to dig and find a place to relive herself. She stays cleaner because there is no dust being kicked up from the litter. This keeps her coat soft and shinny and, overall, healthier.I do use Sustainably Yours Natural Cat Litter in the box. It really is dust free, I know all litters say that, but none of them actually are. The litter I was using said it was 99% dust free and it kicked up just as much dust as cheap clay litter. Sustainably Yours Natural Cat Litter is an all natural, biodegradable, and super absorbent litter. That was the big problem with all the other litters. When I would go to clean the clumps would be stuck to the bottom of the box and I would have to scrape them free. Sustainably Yours Natural Cat Litter does it job so well, and fast, that the deposits get sucked up and turned into lumps so fast that it never gets the chance to reach the bottom of the box.Now on to the ELS customer service department. They are fantastic! I had a small problem with my initial order and they wanted, I mean really wanted, to fix it and make sure I was happy. I sent them pictures of what was wrong and they corrected it the very next day. Customer service like that is almost extinct nowadays. They were not aware of my health or financial status so I know it wasn't them just being good so the disabled person doesn't say anything bad. They really wanted to help and they did. I am a very happy customer and I hope that this review makes you one too.