Despite a tenfold increase in the use of pesticides between 1947 and 1974 (in the US), crop losses due to pests have. . . remained at an estimated 33%. Losses due to insects alone have nearly doubled,. . . from 7% in the 1942-1951 period to about 13% in 1974.
I will say that I don't expect anybody to do anything that makes them feel uncomfortable. Or makes them feel like they're putting themselves in a bad position with their job.