ILUVMYCATS; Welcome to Pet Talk. I hope you find as many good comments and acquaintences as most of us have through this site facility.

There are many reasons for this behavior. To start with, how many cats do you have living with you? Does your UTI cat (you didn't mention a name) often pee in different places in the house or generally in one area? You might try to place another litter tray in the alternate area, where he usually goes. Even a temporary one would do, to check and see if this idea helps. Also, I am assuming that his original litter box is kept clean. If I forget to empty my cat's litter box and wash it out, they will usually begin to litter in other places other than in the designated litter place, especially the older cats. These are some ideas to check on. I hope they help . Also, on the internet, there are many cat behavioral sites in which to learn about the reasons and rememdies for such behavior.

..........wayne