The problem with that corn is that the farmers were not using it in accordance with recommendations. I forget the exact pest they were using BT for, some specific caterpillar I think, but they were supposed to leave some strips untreated so the surviving pests did not develop that immunity...
Dunks are an organic approved method to control mosquito larva. It is a specific form of BT that targets mosquitoes that is perfectly safe for your chickens. It gives the larva a belly ache so they stop eating and starve to death. It’s basically a disease that only affects mosquito and fly...
It may only take a day or two for some mosquito eggs to hatch and you start seeing wigglers. That’s not a huge deal as long as you dump the water a couple of times a week before they mature enough to become adult mosquitoes. The wigglers aren’t the problem, the adults are.
You have to look at...