I have an elderly cat who has a history of digestion issues. A couple months ago he started having severe constipation, which he alerted me to by pooping on the floor in front of the litter box instead of in the litter box itself. It took a little while to readjust his diet to fix the constipation issues, which have cleared up.
Unfortunately, I know this because he's still pooping on the floor, and now it's a bit harder to clean up after.
He still urinates in the litter box, and I suspect that he's just gotten used to pooping on the floor or associates the pain of constipation with the litter box or the like. I've tried replacing the litter box with one that's easier to get into, as well as changing the kind of litter in use to see if that breaks the association, but that hasn't helped either.
Unfortunately, there isn't anywhere else in my home that would be suitable for his litter box, so changing its location isn't a possibility (and anyway, he is going to the right room).
What else can I try to stop having to mop my bathroom floor every day?
Edit: For the first time ever I actually caught him in the act of doing it. He started out by standing in the box, started clenching down, and then walked forward as the poop came out. So clearly he's starting in the litter box; the challenge is getting him to stay there.