Mosquito Abatement Districts (MADs) are mysterious, quasi-governmental agencies set up for the sole purpose of controlling mosquitoes. “Mysterious” because most people know very little about them or what they do. MADs keep a low profile, most have little or no online presence, and not every community has one. In the Midwest, Illinois, Michigan, and Minnesota have at least some of these districts, while Wisconsin and Indiana rely on local health departments or contracted service providers for mosquito control. Here’s a handy article by Midwest Pesticide Action Center that tells you more about these districts.