We put up a new electric wire when we first got cows on our land. It was just a single wire until we put up the barbwire fence. I watched 2 does and some fawns that night walk slowly up to it. They got within inches of the wire trying to smell it an then backed off a second and went under it. They never had a problem after than. Just keep it about waist height and the deer wont be bothered by it