This box is so easy to use! I'm a week into using this box, so far I love it. Assembly was a breeze and my kitty Leela used it right away. With most little boxes there's usually some odor but surprisingly this one didn't smell. I had to lift the waste lid open to see if she'd used it. Just change the tray once or twice a week no odor. I bought the reusable tray for eco friendliness. I'd also recommend buying the hood. My kitty likes to kick and scratch the litter for funsies and make a mess. The hood keeps most of the litter in the box.