They used different toxins in different tests, a modern bacterial toxin targeting mosquitos, and then simply boric acid, about which they say: … and it kills in

They used different toxins in different tests, a modern bacterial toxin targeting mosquitos, and then simply boric acid, about which they say: … and it kills in so many ways that there’s never been resistance to it. Some authorities think there never will be. Maybe it will select for mosquitos that will avoid the fake nectar, but that can be rotated and the mosquitos need to feed on nectar. They inadvertently tested the boric acid on the local human population when they used fermented juice in the bait pitchers. It proved largely harmless to humans who drink jugs of random, poisoned alcohol they find laying around.