I recently acquired a remote training collar from you. We had tried a number of methods to stop our Springer Spaniel pup from chasing sheep, but had to resort to keeping her on the lead during walks on Dartmoor. This was not much fun for her – or for us. After reading the excellent literature supplied with the collar, we started the training. It only took four applications for the problem to be cured. The dog has had no adverse effects and is now a joy to take out without being on a lead all the time.We would certainly recommend its use in extreme problems such as we experienced. Thank you for your excellent advice and service.