We have a male kitten that is about 12 weeks old. He uses the litterbox normally but at night he poops in mine and my wifes room or my kids room. I noticed that he has been nursing on another cat we have but I dont think he is getting anything because she is spayed. The thing is his poop is always runny and we are feeding him kitten food. What do we need to do to stop him from doing this. Please help