[demosthenes the elder]

nahhh...
they claim to love the environment? they worship nature? ok, fine. set them down bare-ass-nekkid in that Alaskan Arctic Wildlife Reserve they keep moaning about, several hundred miles away from any habitation, in the middle of winter, and let Nature take its course.
(apologies to Tom Clancy... it was initially his idea)

[RightWhale]

in the middle of winter

Make it in the month of July. Should be a few biting insects left even that late.