A friend raved about the Leo’s Loo, so we got one too. But our Cleo wouldn’t use it! After about three weeks, we finally did what a stricter parent would have done at the very beginning. We took his old litter box away! Only leaving some old litter in the new loo. We were initially worried he would refuse to go pee altogether and hurt his health. But that didn’t happen! He used the automatic loo that very same night! Now that he has been using it for awhile, all is good. The machine does what it’s supposed to do. We just top it up with our regular clumping clay litter that we have always been using. Now we rave about it to our other friends, lol.