We have a 5 month old chihuahua , he poos behind the recliner yet goes to a wee pad to pee once he pooped on the wee pad we tried to put a wee pad where he goes behind the chair , it did not work as wee expected , what should we do to get him to pottey poo on his wee pad where he pees, we cant take him out side its cold and snowing here we are seniors so we would be happy just to house train him inside then when its warmer take him outside ? we are looking for your help thank you