shakeTrainer - The Complete Humane Dog Training Kit With 5 Minute Instructional DVD - Stops Your Dog's Bad Behaviors in Minutes Without Shocking or Spraying - Easy To Use For The Entire Family HOW IT WORKS - Barking or other behavior problems? Shake things up! shakeTrainer is a fast, effective, and proven way to stop your dog from barking, chasing, chewing, digging, and other unwanted behaviors - permanently. Handheld and easy to use, it emits a harmless, but unique, consistent sound frequency when shaken. Dogs quickly learn to stop undesirable behavior to avoid the sound. Comes with training guide and instructional DVD. Rolled steel with no-slip silicone bottom. WORKS IN LESS THAN 7 MINUTES - Youll see results immediately - even if youve never had any luck training your dog before. NO EXPENSIVE DOG TRAINERS NEEDED - Not only is shakeTrainer easy to use, youll also save money and enjoy a better life with your dog. APPROVED BY VETS AND TRAINERS - shakeTrainer is a foolproof system created by professionals and approved by vets. 100% HUMANE TRAINING DEVICE - shakeTrainer doesnt shock, spray, or emit ultrasonic sounds that are harmful to your dog. Works on dogs of all breeds and ages.