I'm going to presume that we all know what a clicker is and what it does. If you happen to not know, then you can learn more by reading Jean's in the classroom. But, as popular as they are, there are some very divided opinions on their usefulness and effectiveness. Tell us your thoughts... For me, I am really sat in the middle. I appreciate what they do, but I've always resented relying on things that I may not always have to hand, and may be used by others inadvertently to influence my dog. (Imagine a classroom full of eager clickers and their dogs.) So any dislike I may have towards them, isn't really towards them specifically, but rather towards dog gadgets in general. I do use a clicker but only for the first few days of shaping a new behaviour. Then I switch to my usual "that's the way" to replace the sound of the clicker, and to let the dog know that she's doing the right thing. But for that start period, I do find it invaluable. I may find I rely on it more when I do some more protracted shaping behaviours in the future.