I have a 15 year old healthy female cat. Lately she has been peeing inside, I will clarify by saying she has no litterbox and usually does her business outside. These events have become deliberate. We hang up towels in the bathroom to dry and she pulls them down and urinates on them. This originally started 2-3 months ago when I brought my kitten home. The kitten has since left and we have removed all of the kittens things from the house and scrubbed things down. The urinating has continued. About a week ago my brother moved in and brought all of his new things. I understand that can put more stress on her but it is something that could not be prevented. She has favorite/routine spots she likes to go. Does we have tried washing these things (clothing) with special things to remove odor, and thrown out the things that are not washable. She makes new favorites. Is it time to get her a litterbox or does anyone have any ideas?