Ultrasonic Stop Barking Bark Trainer Training Dog Device Control Collar NE#2 Type: Training / Obedience Dog Age: Small / Medium / Large Features: This is a completely safe and humane way to control your dog's nuisance barking. It DOES NOT emit shocks of any variety and will cause no pain to your love pet.Whether you are the dog owner or his neighbours then you will appreciate how annoying nuisance barking can be - not only for you but for your long-suffering neighbours too! The dog bark stop collar is a human, safe and effective device for your dog to stop barking.