I might suggest to you that you give Clomicalm a try. It may seem like I just want to medicate the problem away since I told someone to try this for cats who spray. But it's for behavior problems, I noticed results immediately. (Specs bullies Boo plus he sprays, too.) and there have been no side effects. He takes 1/4 tablet (5 mg.) before bed and it keeps him calm. No more catfights. No more spraying. Why not ask your vet about it?

Blessings,
Mary