Bests & Worsts Reviews from Amazon

This is my second one. My first was so successful (I have six dogs) and recently moved into a community from a farm. The Dogs were driving the neighbors crazy. All the dogs don't respond equally, but my Doddle Dog (the worst offender) stops immediately. I don't even have to push the button. I just hold it up and "aim". They said humans can't hear the beep, but I can easily. I can't decide if Im gong to give this to my neighbor(who gripes the most) or keep it for myself so I have one at each door!