I have a senior cat that has arthritis and it is difficult for her to use the litter box that she had.  She was having accidents outside of the box as she couldn't get in the box very easily.  I saw this Babbie Senior Litterbox on the Wayfair website.  I am completely satisfied with this litterbox and my cat is too! What a difference.  I would definitely recommend this to anyone that has a senior cat.  It is PURRFECT!