Our special needs, rescue dog was a handful to say the least. She attempted to dig out from under a physical fence. When she was on the run she would run so fast and hard that her body would fly in the air like she was on a tether. We feared she would one day snap her neck. Bring that she was a runner and car chaser we were apprehensive to get an invisible fence. People say it doesn't work, it's in humane, it's too expensive. Well I feel that it was the best decision our family ever made in regards to the happiness and well being of Kaiah. She was very aggressive to other dogs, cars, trucks, motorcycles, school busses, mailmen etc. The invisible fence was the only thing that would let her have the freedom of running our 3/4 acre yard without getting injured or loose. Invisible Fence of Canton sent a trainer out to train the dog with the boundaries of the fence. It really made Kaiah's life much better. The trainer went above and beyond for our family and even came out a few times to make sure Kaiah was safe and happy. Invisible Fence was worth every penny.