Vicvol Mini Dog Bark Control Device, Outdoor Anti Barking Ultrasonic Dog Bark Control Sonic Bark Deterrents Silencer Stop Barking Bark Stop Repeller, No Bark Tool

Best buy ever and would highly recommend! Moved into a house with dogs on either side of me one of which is a doberman aka son of satan. I suffered daily with their constant barking. After putting this device outside all I've had to endure is the confused look the dogs give me and the sound of silence. Now if only they could invent the same for my children!