My 15 year old has been spraying outside his litter box.. He goes in, but then sprays out of it. He's been examined by the vet twice. No urinary tract issues, no kidney issues, no thyroid issues. So the vet thinks is must be behavioral, though he's super spoiled and nothing has changed in our home that would cause him any stress. Anyway, the vet gave me some medicine for him - kitty Prozac, essentially. I cannot get it into him. If I put it in his food, he detects it and won't eat. I can't get the dropper in his mouth, and when I finally did, he spit the medicine out. I'm at my wits end. Does anyone have any ideas?