Now do the math for the drones required to sweep the land for 200 cows, say, once a month. A spare wheel probably costs as much as a magnet. And don't forget

Now do the math for the drones required to sweep the land for 200 cows, say, once a month. A spare wheel probably costs as much as a magnet. And don't forget that the metal being ingested isn't just sitting on the surface of the grass. In many cases, it's probably buried in the first 2 or 3 cm of topsoil and being turned up as the cattle uproot the grass. Is your drone going to handle this? Is it really handling all this at a price of sub-$20 per head over 10 years? I'd have to see it to believe it.