The idea: Deep trash can for the tasty banana peels. Flood the trash can with CO2. CO2 is heavier than air. If the trash can is deep enough maybe a sufficiently high concentration can be maintained without too frequent flooding.
The attractive smell should still be noticeble for the flies. And the environment around the trash of their desires is deadly.
The idea: Deep trash can for the tasty banana peels. Flood the trash can with CO2. CO2 is heavier than air. If the trash can is deep enough maybe a sufficiently high concentration can be maintained without too frequent flooding.
The attractive smell should still be noticeble for the flies. And the environment around the trash of their desires is deadly.