Review on BIG DEAL Anti Barking Device: Stop Dog Barking Indoors & Outdoors with 50 Feet Range - Safe Training Tool for All Dogs by Alan Lewis

I doubted it would actually work, but it works! And so on! We have 3 large dogs that bark at everything in our cul-de-sac, not just in the yard. I didn't know how bad it was until I started working from home. It's terrible! Every car, person, van etc and all 3 barked. It was like an ongoing problem all day. They also bark at people in our yard on the path that leads past it. *Immediately* when that barking was turned on at the first stage, the barking stopped. We have a stubborn young labrador who will shake it off and bark at it from time to time but it's about him not the box. I *highly* recommend it if you have a barking problem!