|A Brown Tree Snake|
The answer may rely on mice and acetaminophen the active ingredient in Tylenol. 2000 mice, which are dead and pumped full of the pain killer, will be dropped using small cardboard parachutes.
Two things which the snakes love, mice and the painkiller, will be theirs for the taking. They love the taste of the pain killer even though it's poison to them, and it will kill them.
Read here for more: http://www.nbcnews.com/news/other/two-thousand-mice-dropped-guam-parachute-kill-snakes-f2D11685572