How to find a dog trainer

[Catherine]

I can't see the article either. It is blocked for my area. I can try looking it up directly.

(The best I can do is find a Facebook page. I did find the quote about the two dog trainers.
I have tried different things and I just can't get to the article.)

I guess like everything dog training has different opinions on how things are done. 
I have never seen an invisible fence in use. I would assume that different brands are different in the way they work. 
Having one that could be moved would have its uses. You could take it places and set it up. Is that why they created a moveable system?

So it works because you walk the perimeter with the dog and teach the dog where the fence is.  There are lots of dogs that are smart enough to do that.
There must be dogs that can never use an invisible fence, because they just don't remember where the fence is. 
There must be dogs that just don't care. If the shock is small they would ignore it? Does that happen?