There are other medical reasons for this than just a UTI. My diabetic cat did this because he had to go so often that sometimes he could not hold it. Also, you may want to have more than one littler box. first reason, more than one cat, and second reason, it should be convienient for them. Sometimes it is just too far away. I have boxes on every floor and every room in my house (of course I have 13 cat. but still) Best of luck with the vet visit.