I have friends that have one and the training was hit and miss at first. Gigi caught on rather quickly. Drake was another story. He finally started to get it after a few days. Trouble was he'd stick his head out of the door and then start peeing. So, yes, he was outside...he could see the grass and the trees and the sky, and he could hear the birds cheeping, but somehow, he still manages to whizz indoors. He finally got it and now uses the door regularly with few incidences.