[cheepin]

> artificial value to killing them

Another way to think about it is an artificial value to keeping the population going. All the animals will eventually die yielding a reward, but if you can keep a population going, the reward will keep coming.

The "solution" for countries who wanted to remove invasive species is to embrace pretty heavy handed comprehensive enforcement. (See http://www.scientificamerican.com/article/canada-declares-wa...)

[Houshalter]

My point is that only applies once the bounty has already worked to reduce the population to a low enough level. After that you can end the bounty and try other things.