This is a review of life or death. My dog’s life and my life to be exact. When we contacted Invisible Fence owner, Chris Roher, we were in a «it’s me or the dog» situation. My dog has nearly been run over twice and had drug me down on the ground numerous times. Our family was in turmoil and we were faced with the decision of getting rid of our beloved pet. Chris Roher explained the Invisible Fence system to us and guaranteed that our dog would not go outside the«fence» area. I was doubtful that it would work. However, unlike many products of today… THISREALLYWORKS, My dog is happy he can go out whenever he wants to RUN, which is what he needed and I don’t have to worry about him running into the street. The installer, Matt, came to our house and had everything up and running in a few hours. He then showed me how to train our dog to get used to the fence. If you have a problem keeping your dog on your property I cannot stress enough the value of this product. I have even given Chris Roher a personal testimonial to use in his future sales efforts. I encourage anyone who loves their animals(it works on cats too), to give this company a call. It was not a cheap investment, as our fence cost $ 1200 but for us it was well worth it. They follow up when we have questions or need batteries for our dog’s collar. I cannot say enough positive things about this company and product.