Paws-a-Palooza Professional Dog Whistle | Train Dogs & Promote Obedience with UltraSonic Bark Control & Adjustable High Frequency & Durable Lanyard & Tight Grip Cover Better Quality & Durability: Thanks to its Tight-Grip Cover, this premium whistle won't fall apart. Sturdy rip-resistant lanyard prevents loss & damage. Control Annoying Barking: Just blow the whistle to emit a high-frequency sound that stops barking dogs in their tracks. Customize It for Your Dog: Use the frequency rod to determine exactly what sound your dog will heed. Then preserve that precise setting with the handy locking nut. Great for Obedience Training: This versatile whistle works well for so many uses from training puppies to handling aggression. It's your humane alternative to shock collars & other harsh methods! 30-Day Guarantee: If you don't love our Paws-a-Palooza Dog Whistle within 30 days of delivery, send it back for a money-back refund. No questions asked!