So I have a very picky cat. He don’t like change at all, but he loves this littler box. He got in it right away and used it. It is so easy to set up. The fact that my daughter can control the clean time on her phone is great. As soon as he uses it she can clean it right up with a push of a button. It is not loud so it doesn’t scare the cat. It don’t stink we love it.