N.W.
When I moved, one of my cats started peeing in my living room and on my bed!! We got her checked out for a UTI and it was negative. We finally got it under control, here's what I did:
1. Cleaned the area using OdoBan. It's the only thing I've found that totally gets rid of the smell. You can get it at Sam's club.
2. There's a litter called "Cat Attract" and it's for cats who have a problem using the litter box. The litter has a special scent that "attracts" the cat. It also is a very good size. You can find it at PetSmart. I love the litter, it clumps very nicely. You just can't use anything that would change the scent, so you should clean it every day or every other day. The litter comes with a booklet inside with tips on how to help cats to "think inside the box." It's about $13.99 a bag.
3. I started giving my cat Rescue Remedy, it's a natural antidepressent (bach flower essence) that's approved for pets. I put 3 drops on her food every day. It helped her relax in her new setting. I did it for about a month (she stopped peeing almost right away with the new litter and the Rescue Remedy) then I weaned her off (every other day, then every 3 days). You can find it at health food stores for about $8.99 a bottle, and the bottle lasts quite a long time.
4. I did spray the area with No Mark and I tried Feliway (a cat pheremone that relaxes the cat) but Feliway is very expensive. It works, but I found the new litter and the Rescue Remedy worked just as well and they are cheaper!
Anyway, we've been pee-free for a long time! I still use the Cat Attract litter but no Rescue Remedy. If there is an upset in our family i put her back on the Rescue Remedy for a short period of time, she's just a sensitive cat.
Good Luck!