Dog Barking Devices Whats The Best Device To Reduce Our Dog Barking?

Whats the best device to reduce our dog barking? - dog barking devices

I've heard that send acoustic alarm device to stop a barking dog.
Our dog is outside the shelter and food, and regularly walk left, but the barking is an annoyance I `m sure the neighbors.
I recognize that a degree of barking is normal, but I do not want to receive complaints about noise!