On one of the sides of my back yard there is a section where the fence is only about 4 feet tall and after 3-4 years my dog Haley finally realized she could jump it and hop into the neighbors yard. I had to keep her tied up for a few day while I set everything up and I had to order an extra roll of wire because the one that came with the kit was not enough to wrap around. I'm sure this varies from dog to dog, but she does very well with boundaries and restraint so I have it set very low and after the first shock she learned how close she could get to the fence. I've never had issues with connections since I've set it up. I have the controls in the garage and I love that it has the two lights because I can simply glance over and see that the connection is not broken. This is probably one of the best choices and investment I could've made to ensure her safety and freedom in the yard. I have recommended this to someone in the past who had similar issues, and would recommend for others who struggle with keeping their pets in areas.