I set up the Rock so that they'd be too busy digging themselves their own little hidey-hole to breed - besides, the people I send there are either too nasty or too dumb to manage the mechanics. By definition, they can't adapt...

Here goes:

______________________________

Irving:

I Hereby Banish You to the Rock of Presumptuous Ninnies, there to be Ignored for Eternity. Here's your shovel.

Run along.

_____________________

How was that?