There are bio solutions, e.g. my city puts mosquito-larva-killing bacteria in the river and the lakes.
It works okay, but they are unable target _all_ water surface. They use drones, they give out these bacteria to people so they put it in the rainwater tanks, etc.
It works okay, but they are unable target _all_ water surface. They use drones, they give out these bacteria to people so they put it in the rainwater tanks, etc.
https://en.wikipedia.org/wiki/Bacillus_thuringiensis_israele...