This remembers me to the story of the UK trying to eliminate cobras in India. They offered some money in exchange for a dead cobra. It turned out that the local

This remembers me to the story of the UK trying to eliminate cobras in India. They offered some money in exchange for a dead cobra. It turned out that the locals started to farm cobras to get the bounty. After the government understood it was not working, they stoped the program. All people farming cobras left them in the wild... at the end the amount of cobras was a multiple as the beginning... It is difficult to make good public policies.