The Barx Buddy gadget is really simple complete, using vertical waves that create a sound just dogs can listen. Humans are not going to hear this in any way, and so it seems like nothing at all is being done in any respect. Dogs may notice this annoying sound, despite the fact that it is a embarrassing noise, it isn't harmful in any respect to this pet dog should they hear that it a few times previous to learning how to improve habits. https://www.marketwatch.com/press-release/barx-buddy-review---dog-trainng-at-a-new-level-2020-03-03