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OSU Extension

College of Food, Agricultural, and Environmental Sciences


Ohio Commercial Pesticide Applicator License Study Guides

About These Study Materials

To qualify for a commercial pesticide applicator license in Ohio, you must: (1) pass the Core exam, (2) pass at least one category exam, (3) submit the application, and (4) pay the license fee. These study guides are designed to help applicants prepare for the exams.

For additional information or help in deciding which pesticide-use category you need for licensure, call the Ohio Department of Agriculture’s Pesticide & Fertilizer Regulation Section at 614-728-6987. For information on optional training courses for new applicators and recertification opportunities, call Ohio State University Extension Pesticide Safety Education Program at 614-292-4070 or visit To register for a seat at a pesticide exam session or to find recertification credit class opportunities, please go to and click the “Online Tools” tab near the top-center of the page.

Study materials are available through local Ohio State University Extension offices and online at Ohio residents get the best price when they order and pick up their purchases through local Extension offices. Find your county’s Extension office at Please call ahead for availability.

Available study materials are described below. Download a printable catalog here.

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