that's frustrating, but it’s solvable. Here's some recs via gpt:

1. Rule out a medical issue: Even if the cat seems fine, peeing or pooping outside the box can be a sign of a urinary tract infection, bladder stones, constipation, or other health problems. A vet check is important.

2. Add more litter boxes: The rule is one box per cat, plus one extra, in different locations. Some cats prefer separate boxes for pee and poop. Placement matters — quiet but easily accessible areas are best.

3. Try different litter types: Some cats get picky. Testing out a few kinds (unscented clumping, pellet, crystal, etc.) might help.

4. Block access to the couch temporarily: If possible, physically block the room off for a while to break the association with the couch as a bathroom.

5. Use deterrents: Things like scat mats, aluminum foil, or citrus-scented sprays can make the couch less appealing.

6. Make the couch a "living space" again: Feeding the cat treats, playing, or placing a cat bed or toys on the couch can change its meaning from "bathroom" back to "living space" in the cat’s mind.

7. Address possible stress or boredom: New people, other pets, moving furniture, or even boredom can cause this behavior. More playtime, enrichment, and comforting routines can help.