Mylod Dog Whistle to Stop Barking, Free Lanyard Strap,Dog Obedience Training and Repeller with Lanyard and Anti-Loss Cover PREMIUM DOG WHISTLE TO STOP DOG BARKING HUMANE OBEDIENCE ALTERNATIVE to painful shock collars POSITIVE REINFORCEMENT gains your dogs cooperation rather than use of harsh physical or vocal means INAUDIBLE TO HUMAN EARS so your neighbors are not disturbed by vocal commands as you train your dog CUSTOMIZABLE FREQUENCY with locking nut lets you lock in the pitch that your dog best responds to ANTI-LOSS COVER prevents loss of your whistle. Complimentary lanyard keeps it at your fingertips