We found our 5 yr old cat had been urinating on our dining room carpet- possibly for 2-3 months. All after new dining furniture was placed. We isolated the cat in the bathroom for 5 days- she still returned to the dining room again and urinated. What else can we do besides giving away our cat? She's never done this before.
It sounds like she is marking territory. First, I would have her checked by the vet to make sure that she does not have ant medical problems. If this is a behavior problem, anti-anxiety medication or valium may help. You can also try Feliway. vetcare