Montana Pesticide Licensing and Certification

About 5 of every 50 questions on a Montana Core practice exam come from this topic.

Sources checked November 10, 2026

What to know

Under the Montana Pesticides Act, anyone in the business of applying pesticides for others needs an applicator's license from the Department of Agriculture, applied for every year before applying, and the applicator is responsible for pesticide use by operators and employees under the applicator's supervision. License classes are commercial, public utility, government and noncommercial, each with one or more specific classifications; aerial work, drones included, needs the aerial classification plus another fitting one, and a certified applicator may work anywhere in the state. Noncommercial applicators may use restricted use pesticides only on their own or their employer's land, and 18 is the minimum age to buy or use them, apart from the exceptions the rules allow. Each business location needs a licensed applicator, and the owner stays financially responsible. The core exam covers laws, labeling, safety, toxicology and first aid; 80 percent passes the core and each classification exam, scored separately. Retakes wait seven days, then 15 days, and after a third failure until January 1. Out-of-state applicants must pass a Montana law exam. Requalification runs on a staggered four-year cycle, by the full exam series or 12 credits with 6 in person or live; a lapsed applicator retakes the full series. Operators work within 100 miles of their applicator, use only what that applicator may use, and lose their licenses if the applicator leaves until a new one is appointed. Commercial applicants carry liability insurance, with exemptions such as public utilities. Farm applicators need a five-year special-use permit for restricted use products on their own land. Violations are misdemeanors; willful major violations causing significant harm are felonies.

Where it comes from

• MCA 80-8-203, 80-8-204, 80-8-209
• MCA 80-8-306
• ARM 4.10.101
• ARM 4.10.201, 4.10.202
• ARM 4.10.203, 4.10.206

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