This product is great because it doesn't track out of the box. And I don't even know he has urinated in his box. The only thing I am not sure of is if he is defacating in the box. I check every day and there is no remnants. Does it do the same as the urine?It didn't come with the best instructions. My cat has another box which he might be using. I have heard him in the box with the Petsafe. And there is no smell or dust either. Bonus