Well, when the potty problem is really "only" behavioral", Feliway is a solution. To get rid of the smell, you can also use baking soda if the enzymes fail. I got a very bad smell out of my sofa last year, when Luna had a "potty accident" there.

But if the cat hasn't been checked by the vet yet, I would recommand to have the urine tested. In most cases, bladder infections are the cause for litter box problems.

(If you're interested, you can also read my article on this subject here .)

Kirsten