My friend has a two year old cat in good health (confirmed by vet). She has started peeing on the rugs. She has tried everything, even consulted a behaviorist to no avail. Nothing in the cats environment has changed. She is at her wits end, she has wall to wall off white carpeting. There have been no new family members, no one has moved out, no furnishings of anykind have changed. Same litter and food. Does anyone have any suggestions?