The screw-worm control project is really getting going now. Here’s the lineup for a conference the USDA held about the subject to kick off their big education and treatment push. At this point, the campaign focuses on teaching ranchers how to minimize and treat superficial wounds on their livestock, as those are the main point of entry for the screw-worm fly. As explained in the USDA archives, this campaign subsequently evolved into a biological control method that completely eradicated the pest from the US.