PetsTEK Dog Training Clicker and Dog Whistle Training Kit Silent Bark Control for Dogs - Ultrasonic Patrol Sound Repellent Repeller Training Deterrent With help of the clicker, you can teach your dog new behaviors with positive reinforcement. This type of training is fun and does not require a lot of experience in dog training. Training clicker comes in assorted colors: black, white, green, blue and red. Whistle is another training tool to help stop unwanted behavior and teach your dog to obey commands. With help of the clicker, you can teach your dog new behaviors with positive reinforcement. Training clicker comes in assorted colors: black, white, green, blue and red. Whistle is another training tool to help stop unwanted behavior and teach your dog to obey commands.