Nature balance is the best way to apply solutions. We can find an artificial plan but nature test his solutions over millions years. Bats have a bad reputation but in fact they are the best predators of moskits. In every country exist endemic population of insectivor bats, biologist could study the best species and work to increase his population, and control his health. But contact with bats as we know must be avoid information in this way must be given to people. Sure without bats moskits will increase.