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Commercial Study Guides

When you first apply for a Commercial license, we will send you study material for the exams you plan to take at no cost. Some study materials are available for purchase from OSU Extension office, or the OSU eStore.

Commercial Core

Category 1 - Aerial Pests

Category 2a – Agronomic Pests

Category 2b – Horticulture Pests

Category 2c – Agricultural Weed

Category 2d – Seed Treatment

Category 2e – Tobacco Suckering

Category 2f – Soil Fumigation

Category 3a – General Aquatic Pests

Category 3b – Boat Antifoulant

Category 3c – Sewer Root

Category 4a – Forest Pests

Category 4b – Wood Preservation

Category 5 – Industrial Vegetation

Category 6a – Ornamental Pests

Category 6b – Interior Plantscape

Category 6c – Ornamental Weed

Category 6d – Greenhouse Pests

Category 7 – Vertebrate Animal

Category 8 – Turf Pests

Category 9 – Livestock/Animal Pests

Category 10a – General Pests

Category 10b – Termite

Category 10c – Fumigation (non-soil)

Category 10d – Mosquito, House Fly

Category 11 – Livestock Predator

  • No study guide available

Category 12 – Wood Destroying Insect Diagnostic Inspection (WDI)

Trained Serviceperson Manual