When my cat was alive, in her later years I guess she either developed kitty dementia or she was acting out because her cat cousin had died before her. We were both heartbroken over that. She would pee anywhere she wasn’t supposed to. I’d come home from work, could smell it in my bedroom, and after feeling around the bedspread found she’d peed on the bed. She did that a couple of times. Maddening!
SO, after trying several methods (Cat Away sprays, orange oil spray, plastic sheeting laid over the bed and sofa which she would still sometimes jump onto and pee) I got Cat Spikes.
Amazon.com : cat spikes
They are awesome. You lay them all over the bed, sofa, or anywhere you don’t want the cat to go and as long as she cannot jump over them (which many of them can because cats can be great jumpers), they keep the cats off the furniture. Can also be used in the garden to keep neighborhood cats out of your plants.
I’m a renter so after she died, I steam cleaned the carpets twice; will do it again soon. I also spot-cleaned any time she had a floor accident. But I also got clear carpet mats they sell at Home Depot for all the high traffic areas, mostly because even though I have a carpet cleaner, it’s a task I don’t like so I just cover the high traffic areas.
I also had a big area rug while she was alive that I had to throw out after she died because she loved to pee on that thing. I’d spot clean it, but there is only so much you can do. Old cats can really be a lot of work. And yes, I did have her checked for UTIs. She had none - she was just losing her mind due to old age.
If you’re a landlord, do yourself a big favor and just install laminate floors. Wall to wall carpeting is an ancient practice from the 1960s and 70s. Most apartments don’t need them and bamboo or laminate floors are much more practical for both tenants and landlords.