Do you have a horse with a bad vice? Have you tried a Vice Breaker Collar? I have and my horse no longer has any vices. This collar has been a blessing, and a gental way of saying "Don't do that". You can sit out of sight of your problem horse and deliver a mild or stronger shock to stop the unwanted behavior. For me the unwanted behavior stopped and my horse had no idea i was behind the discipline. This collar is in excellent condition and i have used it 3-4 times in the 2 yrs. i have owned it. Don't let this Collar go bye, stop the unwanted behavior displayed in your herd. Call 217-710-1601, Please serious inquires only.