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University of Minnesota Extension

Extension is expanding its online education and resources while in-person events and classes are canceled.

Category I: Antimicrobial

Man treating mold

Learn about applying pesticides to HVAC ventilation systems, cooling towers and for indoor mold mitigation and remediation. The audience is commercial and noncommercial pesticide applicators. Category I recertification workshops also include recertification credit for Category A (core).

Who must attend a Category I Recertification Workshop in 2020?

Minnesota pesticide applicators licensed in Categories A and I who last attended a workshop in 2018 need to attend an MDA approved recertification workshop. New pesticide applicators (licensed for the first time in 2019) need to attend a workshop, too. Attendance at an approved recertification workshop once every two years fulfills the recertification requirement in Categories A and I by licensed commercial and noncommercial pesticide applicators. Some license categories require recertification more often.

When do I renew my license, attend a recertification workshop or retest?


License renewal is required every year and follows recertification. Attending a 2020 recertification workshop for Category I enables pesticide applicators to renew their license in 2021 and 2022. If an applicator does not attend a 2020 workshop in their categories as required, retesting must be completed before a license can be renewed. Then, in addition to the license application fee, retest fees are charged for each category.


If you attend a recertification workshop in 2020 for Category I, you'll be required to attend a recertification workshop or take the exam again in 2022.

Upcoming workshops

Past year

Mold Remediation Awareness Course, Recertifcation in Category A: Core and I: Anti-Microbial May 05, 2020
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