It just made my dog more crazy and added to his uncontrolable behavior. Saw item on website for half price from $80 to $40 but after I purchase the item I saw Amazon was giving them away for $22. That just showed me what an infective product it was. User's recommendation: If you have a high energy breed that it very stubborn save you're time and money and just threaten to hit them with a belt, just like my dad did with me and my brother. Than always worked for him..