It ultimately worked

This actually worked well, in that it got our four month old Australian Shepherd puppy to run to the back door and bang on it to go out during potty training. The only problem was, she adored the bell sound so much that she slammed them just to hear them ring lol. However, once we took the bells away, she had learned that banging on the back door gets it opened to go out. So, it did the job in the end, I guess.

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