New dates coming soon
Oregon Department of Agriculture: 1 core credit
Washington State Department of Agriculture: 1 recertification credit

This course is currently closed while it is being redeveloped. If you live in Oregon, consider taking one of our Pesticide Safety Education Programs in-person at locations across the state.

Pesticide chemicals in their raw or unformulated state are not usually suitable for pest control. These concentrated chemicals may not mix well with water, may be chemically unstable and can be difficult to handle and transport. For these reasons, manufacturers add inert substances such as clays and solvents to improve application effectiveness, safety, handling and storage. The mixture of active and inert ingredients is called a pesticide formulation and is ready for use either as packaged or after being diluted with water or other carriers. 

This course will teach you about different pesticide formulations, adjuvants and application. The course qualifies for Oregon Department of Agriculture's pesticide applicator recertification, the Washington State Department of Agriculture's pesticide applicator recertification, the Idaho State Department of Agriculture recertification, the Wyoming State Department of Agriculture recertification, the Utah State Department of Agriculture recertification, the Nevada State Department of Agriculture recertification, or the New Mexico State Department of Agriculture recertification . This has been approved as a core class by the Oregon Department of Agriculture.

If you have previously taken any of these courses, you will not be able to take them again using the same account. If you wish to take any of these for the second time, please click the Register Now button and complete your registration using a different email address than used with your previous course(s).


If you have any questions, please contact us at or 541-737-4197


IMPORTANT: Final grade reporting to the state will include grades released as of December 31, 2017. Our system takes 24 hours for grades to release, so to ensure your grade will be counted toward the 2017 calendar year, you will need to complete the final quiz no later than December 30, 2017.

  • Pesticide formulation.
  • Definitions and common abbreviations used to describe formulations.
  • How to identify advantages and disadvantages of common formulations.
  • The role adjuvants play during pesticide application.