EDIT: all my dogs are house trained and baby is one her way to being a respectable young lady she goes to the door now when she has to pee.

Where Tikeya was little we rubbed her nose in the pee, or we would grab the poop and place it on the grass and say "poo goes here". Tikeya took forever to house train.

Oscar we paper trainer and touched his nose to a bell on the door whenever he went pee, sooner or later he rang the bell by himself.

Baby we attached a short lead to our waists and then made her go everywhere in the house with us, and even outside. that seemed to work very well