A lot of livestock owners use a double fencing system for their animals, but it is cost prohibitive for small family farms. We have been piling our brush right along our property line for years. This creates a dense natural barrier that serves to keep our livestock from leaving our place.
We have added to it, in a manner where it is not visible from either side, the old rolled wire fencing and other materials we have that can be re-purposed with the same goal in mind. I really like this because the old fencing we paid for is an investment that is still working for us along our brush pile fenced perimeter. That investment is still being returned to us many times over.
When our livestock has escaped, this has worked very well to keep them out of the farmer's field which is directly behind us. So far, we have never had a hog, goat, horse, etc go through or over it. What happens most of the time is the animal follows the path which leads them to the house where we usually see through a window that someone is out.
It's not completely around our property, but we are continually adding to it as we go.
This is our way of using what is naturally around and on hand to accomplish the same goal of a double fence system. This was a better choice for us than burning it off or carting it to the landfill.