A cat's health, especially a senior cat's can change very quickly. An example is my recently departed senior kitty. I begin annual blood work on my cats when they are 10. When they turn 13 I begin blood work every since months.

In June of my Bridge Angel's 15th year she had blood work that was perfect in every way. Two months later, in August, she developed a UTI and I brought her in. My vet wanted to do blood work again. I said, well she's not due until December, having just had it done two months ago. But I trust my vet so I agreed. The new blood work showed her to be in early stage kidney failure.

Other than the UTI, shehad no symptoms of kidney failure, yet, and very likely would not have shown any for a few more months.

Because of the early detection, I was able to maintain her kidney disease and have her with me for three more precious years. She had a lot of other problems, too. I moved a litter box upstairs for her. I hated having a litter box in my bathroom, but she was old and could not manage the stairs any more. I catered to her every need, because she had given me 18 years (by the end) of unconditional love.

Okay I am getting off topic. Whatever was okay for Creeps before (litter box outside, for example), obviously is not okay for her now. She's aging and needs special care and consideration.

If the litter boxes are kept clean there should be no problem with odor in the house.

If she had no trouble with Quicksilver for the first two years Quicksilver was there, and is only now objecting, I think it is because she feels vulnerable and does not want to be bothered any more, except when SHE want to. My Bridge Angel was devoted to my Red Boy, but in the last year of her life she spent more and more time sleeping in her special bed in the bathroom, where none of the other cats ever went.

Senior cats require a lot of special attention and care, but the love they give back is worth it all.