Lentek Bark Free Dog Training Device

Bark Free has a specially designed sound selector that lets you choose ultrasonic frequencies which can only be heard by dogs and cats, or lower sound tones audible to human ears. Bark Free uses an old age principle of "Negative Reenforcement using Sound"

• Trains dogs to stop annoying barking without using shocks or physical pulses

• Picks up barking from 25-foot radius

• Works with any size or breed of dog

• Choose from audible or ultrasonic frequency settings

• Includes 50-foot power cord; 1-year warranty