I have a 16 year old that was diagnosed as diabetic 6 years ago. I regularly give him his shots and switched him to diabetic food. I haven’t really seen any difference in the years since. He is just recently starting to loose his hearing but I think that is just due to his age. Otherwise, he is happy and healthy. Oh, and he has been FIV positive since birth.
I have two of them. I also had the previous versions. I have also had almost every other robot type litter box and all of them have been horrible except for these. When you take into account all of the scooping and cleaning over time, it really does pay off. It also helps greatly with odor. I also have six cats so it is a life saver.