The service the dog line gave us was great. I bought a dog line for a naughty escape artist dutch Sheppard. I than bought another one for my partners place as my naughty dog and his hound would escape since than I have trained all my dogs to a dog a line. I live in the Central highlands in Tasmania we don't have any fences but with a dog line who needs a fence. I have had to return one collar due to dog chewing it was replaced as their warranty said. Nothing is to much for the Dog line. My only advice is don't buy a cheap one as they can burn the dogs. I would not hesitate to buy from them again a safe dog is a happy dog