My cat did take a little while to warm up to using this litter box as it was different from what he was used to but once he warmed up to it he used it without a problem. I love how easy it makes cleanup and not having to manually worry about his waste is a huge time saver. It's not loud where it disturbs when it's cleaning. My cat is a larger cat and fits with no issue. It's only been a couple of weeks with it but it's running smoothly and I'm happy with this box.