with the feral pig problem all over the world I will forecast that eventually drones /go pros and some sort of firearms will be used in eradication hopes...why not!

There was a demo here a few years ago of a remote controlled chopper expressly kitted out for weed spraying in inaccessible places.The chopper was big too ,enough to carry 16 litres (16kgs) of spray.Thats enough payload for a doz AR`s.

found links

http://www.canberratimes.com.au/act-news...0630-2p5mw.html

http://www.abc.net.au/news/2013-05-02/remote-weed-control-efforts-take-to-the-skies/4664710