Training whistle: make your pet's training session more effective with this high-frequency whistle. Dogs are mainly reacting to tones and acoustical signals, so this a must get for your pet. This high-frequency whistle is for the dog's education. Dog training stick is an effective tool for training your pet. It is ideal especially to teach pets exercises and set challenges. Training is a fun, reward-based method of pet training, communication bridge between you and your pet.