Cat marking-I've tried everything Help!

[Kayla Block-Torgerson]

I have a 6 year old cat that I adopted from a shelter 9 months ago. About 2 months ago, she started peeing and pooping outside of the litter box. I immediately took her to the vet and after multiple tests, we discovered that she had a bad bladder infection and that she doesn't process her food right, causing crystals to develop in her bladder. She has since been on the prescription Science Diet to dissolve the crystals and was doing great. She has become more outgoing and affectionate and we can tell she feels much better than she ever has.

Then about a month ago, she started marking in a bathroom in the house. I got a Comfort Zone diffuser with feliway and put it in the bathroom. It's been in there for a little over a week and she hasn't gone back in that bathroom to mark. But then yesterday, I came home and she had peed on the rug by the front door, which is literally right next to the bathroom where she was marking.

She had previously peed on the rugs in another bathroom and our solution was to keep the door shut, as I hadn't discovered the feliway yet. Her litter box is kept very clean and its new; she is still using it. Nothing in our life has changed; no new pet additions, no changes in schedule, etc. I feel like I've exhausted my options and I can't have a cat that just pees randomly around the house. Has anyone had this experience or does anyone have any suggestions?

[Jessica Lewis]

I've had an experiance similar with my kitty about two years ago. (she was also an older cat but was sick) Since we aren't the first owners of our house, and we still had some of the other family's furniture, we had realized that when we adopted her she could smell another animal on the furniture even though that animal had long since gone. So if you've moved into a house that was owned by another pet owner, your kitty could be smelling traces of that other animal even though they're not in the house any more. We wiped down a lot of walls that she sniffed at and washed off the furniture that we could and it slowed down her "accidents" a lot. Prescribed catfood was also used :) I hope that helps a bit....

[Kayla Block-Torgerson]

Thanks Jessica. Unfortunately, we are the first owners of our house, so there haven't been any other pets in here. I just can't figure out why she would start doing this now, after we've had her for 9 months.