Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It's a horrible nightmare!

I got this machine, because my husband said: "because it's the most expensive it must be the best".It wasn't. The poop was there and it was in the litterbox. So I had to clean it up by myself.So we paid extra money and I had to clean up like if I had the normal litter box. My cat even pee on the floor. It was horrible tosee the way that box was looking. I had to clean it up 3 times a day, and besides, I had to see all the residues of the disgrace that the machine does.This doesn't work properly, so it will leave everything on top, with a horrible smell. If you can, don't get it.Save your money!