Hello! We recently adopted a shelter cat, who has a chronic URI. He has been on antibiotics for 30 days. We have integrated him into our home and he gets along well with our other cat. One problem- he keeps pooping (and peeing) in the bathtub. We have 4 litterboxes - two in basement, one on main floor and one upstairs. We scoop them all twice a day. He uses the litterboxes no problem, and hasn't pooped or peed anywhere else in the house. Since he's been visiting the vet on a weekly basis I can't imagine it's illness related as he is full of energy and is constantly playing. He is 2.5 and was just neutered about a month ago - he was a stray before he was brought to the humane society where we adopted him. Any ideas as to why he is doing this and what else we can do to discourage it? We can't keep the bathroom door closed as we have three kids to groggily stumble in at night to use the bathroom. Even if it started closed the kids would surely leave it open. Please help!!