Shock collar with a long range remote.
Highlands has a good post about how he used one to train a dog anyone else would have thought untrainable. I don't remember if it is on this forum or on his farm blog. If you can't find it here Google Sugar mountain farm blog and you will find it.
Actually I found it for you. Here is the link to Walter's blog and the story about the dog Kita: http://flashweb.com/blog/2006/03/killer-kita-training-the-untrainable.html
Highlands has a good post about how he used one to train a dog anyone else would have thought untrainable. I don't remember if it is on this forum or on his farm blog. If you can't find it here Google Sugar mountain farm blog and you will find it.
Actually I found it for you. Here is the link to Walter's blog and the story about the dog Kita: http://flashweb.com/blog/2006/03/killer-kita-training-the-untrainable.html