Fido might have a lot to say, but incessant barking isn't helpful to him or you. This Bark Free ultrasonic system is a humane way to control barking dogs. Every time your dog barks, the unit is triggered and emits an ultrasonic sound that annoys dogs but does not affect a dog's hearing. The sound reinforces and trains dogs to control their barking. Unit has a range of up to 30 feet, making it an ideal choice for your home.
Lentek BF01 Bark Free PRO Series - B000N2OP88