Review on Deppet Ultrasonic Frequencies Immune Proof Rechargeable by Brooke Stolen

I have an 11 month old GSD that comes with me to the store every day. Their barking and aggressiveness towards some people had to be stopped. I don't like shock collars, but I was almost done. I did a little research and settled on this one based on the reviews and the fact that it's rechargeable and not battery powered. It arrived on a Monday, I charged it which was pretty quick and then when the next customer came in I honked the horn and called her name and said stop! I pressed twice more and repeated my command. She stopped but barked again so I quickly pushed the top button and she stopped and tilted her head and looked at me. I asked her to be nice again by showing her the device. I had to do it again. Seeing it in my hand for the third time, she paused before pressing a single button. The next day it only lasted once, after that she just needed to see it, or maybe just an audible sound. She's fine and goes to bed when she sees her or hears a noise when she doesn't see me. Thank you for this wonderful machine!