I adopted a Bengal female, Bella, 3 years ago, she was 8 month old, was too small in size for that age, and as I learned had food allergies to almost all commercial cat foods, and also to cat litters. We worked hard to solve all the issues, and with the vet advises changed the food choices and switched to only natural types of cat litter.
The problem we have now - Bella started peeing on the couch. As I learnt through the forums, I took her to the vet to ensure she is not having any medical issue. She did have a urinary tract infection, after 2 weeks of medication the infection was treated. But unfortunately, Bella continues peeing occasionally on the same couch, and also 2 other couches in the basement, where nobody can see her. That makes me think that she is not trying to bring my attention to her to any health problem she might have. We have to tilt the pillows every day, otherwise the does this over and over again.
At this time I think it is behavioral, and I am looking for a piece of advice from the forum folks.

I think you just need to clean all areas where cat has peed. Use a recommended urine stain and odor remover and do not use bleach, it may cause the cat to return to the spot.

Jake gave you great advice. Once the infection is cleared up, the cat should return to using the litter box. However, if the areas where she has gone have not been completely cleaned with an enzymatic cleaner made especially for cat urine, she is going to continue using those areas. Sometimes these areas need multiple treatments, too. You may not be able to smell anything, but the cat can. A cat's sense of smell is 14 times stronger than ours. And, in order to make it a whole lot less desirable for her, you'll have to create a way to prevent her from accessing those areas. They do make motion-activated air canisters (you can buy them online) that you can set up in the areas you do not want her. Shouldn't take long for her to realize she is unwelcome there. You need to give her some time, though. Habits are hard to break.

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The little monsters 3

LOL Brian. I believe I heard Jackson Galaxy mention the 14 times stronger on his show, but I could be wrong. Regardless, even 7 times stronger than humans is a lot! If I can smell the urine, then it has to be really strong for the kitty! LOL.

It is so true about the soaking in of the urine. It is hard to get out from any interior fabric. When they pee on the carpet, it goes through to the padding and unless you can get to the padding and underfloor, the smell continues to come back. Been there, done that.

Thanks for your reply! I did clean the pillows and the covers with Liberty Enzyme solution, the couch stayed clean for 3 weeks, and then the incident of improper peeing continued. My vet also suggested anxiety medication - Zylkene, she is still on it.

Feliway has a new product, called Feliscratch, that is supposed to help protect furniture from scratching. I've been wondering if it would help with peeing behavior as well. At any rate, the regular Feliway may help as well.

I'm just not a fan of putting a cat on medication when there is clearly a reason for the inappropriate peeing. I'd be adding litter boxes, making sure the area he is using is no longer attractive. It takes a long while to change a cat's behavior.

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The little monsters 3

The Feliway that I get specifically mentions scratching and urine marking on the package. Not that it helps with the marking. At least not for Raiden.

I've been told that not every cat even registers Feliway, it's like an expensive experiment.

I agree with that last statement! I use it in our bedroom, thinking Raiden will just calm down and sleep through the night, but that doesn't happen. LOL