2 year old Fang has, or had FUS. WE are peeing appropriately now, but I feel like I have to watch, and I measure every clump. I have two other males that are litter box perfect. I will be away for a week and have a friend that will come in once a day to feed and scoop. I am debating whether to take fang or not, because if he should become blocked or start peeing around the house she won't know it, but he is a pain(crying and whining) in the car and I am afraid the stress of a three hour car ride and staying in a strange place(with me) might cause a flare up. So I guess the real question is which would cause him more stress, and the answer is I don't know. What are your thoughts?