nice! i wish i would have known about those last year. my doors are too far gone at this pointWhen we first adopted our GSD, Lucy, she learned early on as a puppy to go outside and potty. The only problem was that she would go up to the door and scratch on it to let us know she needed to go outside. Well, not wanting our door scratched up, and not wanting her to stop telling us she needed to go, we decided to buy a AA battery powered recordable button on amazon. I recorded "OUTSIDE" on it, and it would play when the button was pressed. She took to it really quickly. Then, we decided to add another button, and another, and another, and now she has a bunch of buttons and will talk to us when she wants something.