I wasn’t sure if my cat would transition very well to this automatic box since she is 11 yrs old but I wanted to try bc she has been tracking litter in the house lately and I wanted something cleaner and easier to deal with. She actually took up using the box quickly and I am glad to no longer be scooping litter as a plus. The refills end up being more expensive but to me it is worth it being cleaner and not dealing with it as often.  I wish I would have tried this sooner!