I bought this product for $66 at Meijers.  The cats loved it and so did I, for the first 6 hours.  The kitty poo poo stuck to the rake, caused a jam and the entire rotating arm broke in a matter of hours.  I was so bummed. It would have made life so much easier.  Numerous reviews stated that the poos need to dry before they get raked.  This is true! C'mon you engineers.  This is the only product I would advocate animal testing on.  Great idea but a real mess to clean up.  It is getting returned tomorrow.  :(