Relatively large pests (generally plants or animals that are at least as large as mice) which cause significant environmental problems and upset the natural balance of an ecosystem, should be ascribed certain economic values, such as potential food values. An example would be rabbits and frogs in Australia. Rabbit shoes or frog recipes should be made up so that people have an incentive to go out into the wild and catch these creatures.

The penalties for people doing anything to defraud such a program by either feeding or farming individuals of the target population or doing anything other than capturing them from the wild should be a fine that is so severe that it would make the perpetrators wish that they had followed the rules.