I was troubled by the way the video stops just as he's walking towards the mower, too.
In rural Lancashire/Cumbria, and presumably the rest of the UK, it's common to see a row of mole corpses hanging from a barbed-wire fence. I'm never entirely sure why - is the molecatcher letting the landowner how much he/she is owed? Isn't there a better way?
Or is it to show the moles what'll happen?
ETA: Never mind; I had the radical idea of consulting Google, and found out.