I bought this because I am planning to be out of town for a few days and I have a few cats, so I figured that it was a no-Brainerd. I set the machine up exactly as the directions said, I downloaded the app and good thing I did because if I didn't check the machine every now and then it would stay full. Even though I've got the settings set for automatic, ughhh it's frustrating. And why and the heck does my cats urine end up outside of the box ??? Who knows, I don't lol