I have older female shi tzu spayed .She pees in every room in house. I take her out side and she has a doggy door to porch and one to outside run. She insists on going pee and poo on the porch. I have two other shi tzu's and they both go out. If I am in my chair she will ask to go out but if I'm not sitting she just goes in a room. None is off limits. I have used the dog order removal to mop floors. To no avail. Today I found she had peed on her bed and on couch. HELP I even put diapers on her at night but she pull them off when they are wet and goes in house.