Just got an E collar from a friend. A bit hesitant to use it on sheila, not because I think it is cruel, but because not sure on what exact behaviors it should be used on. Example, my dog loves to jump on people and us, we have tried turning, ignoring her, etc...... she gets the pic after a while, but still does it initially like when we get home. She is still nipping, I have tried many of the methods mentioned here to no avail, she gets into these temper tantrums and has this thing for biting at my shorts and usually misses and bites my knees. So my question, with the collar, do you activate when they are in mid motion, do you have to catch right before they pounce etc...... how often should you use this training device. And are there any good websites with info on their use. Thanks. Still debating.