Just wondering if anyone has a litter robot and how they feel about it. Has your kitty ever had diarrhea in it? That is definitely one of my concerns about it. Also I have four cats, I know that one litter robot is nowhere near enough for them. Does anyone have multiple cats with a litter robot? Multiple litter robots? Any suggestions on training? I believe I am going to purchase tomorrow and I just would like more ideas of what I’m getting into.