I picked up grains from a farm in Dwight, Illinois that makes very limited use of herbicides and pesticides (it seems like oats are all but impossible to grow economically without some use of a weed killing agent). The farmer made the transition for his health and the health of his kids, because he was intuiting that certain health problems were the result of agricultural chemicals. I was struck, walking in their corn field, by the abundance of insects and weeds, and the absence of these quantities in standard ag corn fields struck me as alarming.