We have 2 GSDs that are great off the lead but pull like a steam train on the lead. We were advised to try the prong collar to help with this. I was dubious at first as I always imagined they were some sort of medieval torture device, but as it happens they are nothing like what I imagined. Just a little pull on the collar and the dogs are brought back to heel, not like before when I had to use quite a lot of force with a check chain. The dogs are far more engaged with me when on lead using this collar and it makes them think about what they are doing. On lead walks are far more enjoyable for me and the dogs and I hardly have to check them and this is only after a few days of use. Obviously nothing is a miracle cure, but this along with a bit of back to basics training has worked wonders. The service from Abi and Ryan has been top class too. Due to a mix up on the website I was originally sent the wrong collar, I contacted them and told them I needed the correct collar for the next day as we had a training class in the afternoon…….it arrived the very next morning! Outstanding service and a customer gained. Thanks guys.😁