Good to see those electric shock dog collars have been banned but I found a good gadjet to train a dog with from Dick Smith. It's an ultrasonic dog trainer that emits an ultrasonic tone at 110 Db when you press the button. Simple to use, when the dog is doing something you do not want ie pulling at the leash etc you press the button untill the dog stops then immediatley release the button, takes only a few goes for the dog to realise that the annoying noise stops if it stops doing what it was doing when the noise started....