This manual is intended to assist pesticide applicators in the area of aquatic pest control meet the requirements of the Michigan Department of Agriculture for certification. The Environmental Protection Agency (EPA) Aquatic Pest Control Guide served as a basis for this manual. The six sections presented describe: (1) Aquatic pest control; (2) Plant management; (3) Vertebrate management; (4) Invertebrate management; (5) Swimming pools; and (6) Environmental considerations and restrictions. A list of self-help questions and instructions for completing the questions are presented at the end of each section. At the end of this publication, units and conversion equivalents, formulas for herbicide application to channels, and formulas for herbicide application to ponds or lakes are presented. (HM)