My partner bought his cat when he moved in with us 4 months ago. I already have two cats here and over the course of the Summer they still haven't settled. It's his cat that constantly instigates the fights but we break it up before any harm is done. A trip to the vets today revealed that his cat has patchy hair loss due to stress and recommended Feliway. We have put in one downstairs but it can take weeks to work. Has anyone had any success with this?