I had an overwhelmingly positive experience with the Litter Robot company, although my cat who had never used a covered litter box, refused to enter the Litter Robot.
The Litter-Robot is so much better made than other self-cleaning boxes; the instructions (including how to pack the Robot for return) and related information are very clear and helpful; and the representatives with whom I spoke when I needed to return it were so gracious and helpful.
The booklet provided suggestions for persuading a cat to use the Robot. Unfortunately none of them impressed Dmitri who was clearly thrilled when I replaced the Robot with the automated box to which he was accustomed which works poorly and I need to replace frequently.
I hope a cat in my future will appreciate the Litter Robot.
Needham Heights, MA