The use of public health pesticides in California is a very important subject. It involves a number of programs, ranging from pesticide use reporting to the Department of Pesticide Regulation via County Agricultural Commissioners, Surveillance programs for resistance to pesticides by mosquitoes and other pests of public health importance, and training and certification of applicators of public health pesticides. Information on these subjects can be found under this general category. Also included are links to other resources on use and safety of public health pesticides.