My reason for putting int he magnet is for prevention of hardware disease. Where she spends most of her time is what we call the "cow yard" about .15 of an acre. We don't keep any junk around it, but she'll chew on the goat hut sometimes. Where she grazes is in clean field. I walk through both places regularly and even drag a magnetized pole, but want to be on the safe side. Her hay is tied with poly, not wire, and I am meticulous at making sure she doesn't get into any of that. The vet said he'd lend me his balling gun or he could come do it. He said basically there is a bump at the back of their tongue that I would go over and sown into the throat. He said there'd be essentially no chance at all that I'd get it down the wrong pipe and into her lung. I haven't done it yet, so I'm open for other tips and even opinions as to whether I'd be wasting my time or if this is truly a case of an ounce of prevention is worth a pound of cure. Thanks!!!