for a thread in which the Litter Robot was discussed before.
I bought a litter robot. It was the coolest thing in the world and worked wonderfully. Unfortunately, my cats were scared of it
and wouldn't use it. But, my cats were all ferals before they were socialized, so they are frightened easily by weird things. I think a more mellow cat would have no problem.
The nice thing is that they gave me back 100% of what I paid for the robot....they have an excellent return policy. So, if you can afford it (it is a tad expensive) I would go for it!