Rechargeable Waterproof Dog Training Collar with remote shock E-Collar

We had a big problem with our dog barking at sheep. As soon as she saw one, even at a distance, she would bark non-stop and strain at her lead until it was out of sight. Walking in the Lake District was a bit of a strain, to say the least. We borrowed one of these from a friend to try out, and the effect was spectacular. Within a couple of days we could walk her (on her lead) within a few metres of sheep and she would completely ignore them. We have now bought our own, and we've trained her not to bark at cows as well.