Gilles,

I only use it by emergencys. I dont use it for training.

I use the highest level, he cant ignore it because it really hurts.

But you have to watch out because the first time you will give him a shock he will runn away and it will be hard to get him bac to you.

The way i did it with the dog of my brother. I put him on a long leash and go to areas that will trigger him if he ignore a command i use the viber if he still ignores i give him a shock, pull the leash in my direction and let him sit in front of me than i say good boy  or what ever you use.

If you do it the wrong way your dog will be afraid and not confident.

you really need to be  careful because you can mess up your dogvery easily.

But using it the right way it works fantastic.

Two years ago inar killed the cat of my neighbour, when he sees a cat and wearing the e-collar i let him loose and he stays with me, he doesnt even look at the cat.