My cat Sebastian has been having a problem not using the litterbox when he poops. He had a urinary tract infection 9 months ago that has been succesfully treated and I have recently taken him to the vet to see if it has come back and he was perfectly healthy. He is still pooping everywhere but the litterbox. The vet says it is behavioral, but I am wondering. After he poops, he runs through the house like he has been shot in the tail and then claws the rug violently. He even poops in his kitty tee-pee that he sleeps in!! The vet recommended that I lock him in a room with his food and water and the litterbox when we are not home to reintroduce him to using it. This seemed to work for a short time, but now he just poops everywhere in the room but the litterbox. He urinates in it, I clean it once a day, and I have not changed the type of litter I use. The vet gave me a subscription for Valium to give him once a day. I have hesitated to use it until now. This is getting to be such a problem. I don't want to keep him locked up, but I don't want him to continue to ruin our furnitur. Have any of you had this problem, and have any of you given your cat Valium. HELP!!!!!