Cat Haus, I hope you didn't get the impression that I thought you didn't know what was really going on. I didn't mean to give that impression, I just wanted to cover all bases as problems like this are usually multifaceted.
I know you said that you see Ollie urinating right in front of you. That is what my Stomper did too, MONSTER! So I just figured all the pee spots were his, even if I didn't see him do it. I was wrong. I never saw Izzy pee, she was smart enough to make sure NOT to do it in front of me. It was only after getting the photos did I find out I had two that were peeing.
I then started watching their interactions very closely and there are definite aggression issues going on, some so subtle to the human eye that they are missed if not specifically looking for them. With your indoor/outdoor kitties now forced to be indoor only there is probably much more intimidation and stress going on than you see on the surface. Aggression and intimidation can be carried out just by a look. This mean not having overt cat fights does not mean you don't have interaction/aggression issues in the household.
Please read the article in the link I posted above. It is from the World Small Animal Veterinary Association's 30th annual meeting. The title is:The Association between Feline Elimination and Feline Aggression Disorders
Karen L. Overall, MA, VMD, PhD, DACVB, ABS Certified Applied Animal Behaviorist
Center for Neurobiology and Behavior, School of Medicine, Psychiatry Department, University of Pennsylvania
Philadelphia, PA, USA
Print it out and highlight the parts relevant to Ollie and the particular behavior modification medicine that would work best for him. If your vet is not willing to look at this data and agree to change to a more appropriate medication, they you really need to change vets.
Prozac is just one of six different medications discussed in this article. This table gives a brief explanation of there best usesTable 2. Useful medications (brand names are those in the US) for the treatment of intercat aggression and concomitant elimination concerns, with algorithm for use based on mechanisms of action and side effects
1. Diazepam (Benzodiazepine; Valium): for the victim, primarily, to make more outgoing and friendlier; for the aggressor if aggression is secondary to anxiety about interaction and increased friendliness will help.
2. Amitriptyline (TCA; Elavil): for the victim or aggressor with non-specific anxiety.
3. Nortriptyline (TCA; Pamelor): for the victim or aggressor with non-specific anxiety and sedation with amitriptyline.
4. Clomipramine (TCA; Clomicalm): for the victim or aggressor with more specific anxiety.
5. Buspirone (NSA; BuSpar): for the victim, only; may make more outgoing and situation resolves with some overt aggression.
6. Fluoxetine, paroxetine (SSRI; Prozac, Paxil): for more specific anxieties involving outburst (fluoxetine) and social (paroxetine) anxieties.
Also, please don't discount the possibility of Olley having cystitis. He really does show the signs and often times all tests are normal. I too have a cystitis kitty. It started when she was 6 months old. Now at age 12 her bladder lining is showing up thickened on Ultrasound, but it didn't when she was younger.
Cosequin for Cats, really does help with cystistis pain and bladder inflammation. I get mine through Amazon and it is half price. I think it is $54 for like 8 or 9 months worth. It is a chicken flavored sprinkle cap, just open it and sprinkle on the food. Zoe loves it and she hates everything, including human tuna.
I mentioned the pill pockets, because you could then get generic prozac at a place like Wal Mart for $4.00 for thirty pills. My cats need 2.5 mg so I can get 10 mg pills and quarter them with a pill cutter. These pieces are very small. I then take a small piece of the pill pocket and flatten it out and just barely cover the quarter of a pill. I make sure the cut sides are covered good so they will not scratch on the way down. The cats don't chew it and they think it is a treat. I put it in their food dish (all 7 of mine have their own dishes) and make sure they eat it before giving them their dinner.
You are going to have to get creative and have a vet that is willing to work with you.
As I said in my previous post, all of this may just be an exercise in futility. There are those rare cats who really do not want to be house cats...period. Most cats, given the choice would prefer to be indoor/outdoor cats, however there are those that are terrified of outside and those that just feel trapped inside.
I know many people are dead set against barn homes, however you have to make the right choice for your household and Olley. A barn home may be the best choice. I don't know.
For me it wasn't an option. Stomper was a breeding Tom at a kitty mill. He spent the first couple years of his life in a small cage, only socializing when he was used to breed. Not an option for him to be outside.
Izzy is a terrified former feral, if put outside she would disappear and not come back.
Finding a new home for these cats is difficult because even if they go to a home where they would be an only cat, there is still no guarantee they would not start peeing there too.
Hopefully after printing out the article ( there is a printer friendly version link in the upper right hand corner) your vet will help you get a medication that will work in a form that Olley will take without being traumatized. Adding the Cosequin to test it out will NOT hurt him and you don't need a vet to purchase it.