I have a 3 yr old niece who lives with me, and recently she has decided she doesn't feel like using the bathroom so she pees in her bedroom. She has been potty trained for nearly a year and half, but when we ask her why she does it, she says that she didn't want to use the bathroom. I'm at my wits end because my house is begininng to smell like pee no matter how much we clean it, or punish her. I dont know what her problem is, she hasn't done this before. Any ideas?