Ok so my older cat Lily, who is the kitty in my profile picture, stopped using the litter box a couple of weeks ago. My boyfriend just had total hip replacement surgery. We used to keep the main litter box in the bedroom right next to the doorway. I have two litter boxes but both cats prefer the one in the bedroom because that's where they spend most of their time. We had to move the main litter box to a different spot in the bedroom due to my boyfriend not being able to get around it with his new walker. As soon as i moved the box I put l.ily in there to show her where it was. She didn't like it at all. She refused to use either litter box and began pooping beside the couch or in the bathroom on the bath mat. Now that my boyfriend is stronger and using a cane instead of his walker, we decided to move the litter box in it's original spot. Well guess what? Lily still won't use it even though we have moved it back to the place she has always used it. I don't know why she is suddenly refusing the box. What can I do to get her to start using it again? I'm getting real sick of picking up messes in my apartment and it stinks!