All No Bark Collars will eventually have your dog keeping quiet, it is only a matter of time and correction before your dog will learn. Choosing the right product though, that will make all the difference as to when your do will finally catch on and fully understand that barking constantly in not acceptable behavior. We invite you to please browse through our products listed here to find the exact product that your dog will learn from using the best. If you have any questions please call us and we’ll do our best to clear up any confusion there may be with our listed products.