I have a one year old female Vizsla who is full of energy and not very well disciplined. I bought a new electronic collar on eBay for $65 and started using it two days ago. I took her for a walk in the woods and for the first time I had control of her. It didn't take her long to figure out that the "beep" is followed by a shock unless she behaves.When she wanders off too farone "beep" is enough to turn her around and bring her back. This is my first experience with an electronic collar and I can't make any recommendations but I wish I had gotten one a long time ago.