The State of Michigan requires Duct Cleaners to carry a Mechanical License with classification #3 (Ductwork), a Pesticide Business License and a Commercial Pesticide Applicator License category 5B. The Mechanical License is required for companies cutting into or altering the ductwork for cleaning. If the company is not cutting into or altering the ductwork a license is not required. A Pesticide License is required for the business and the technician applying any deodorizer/sanitation in the ductwork. Verify all licensing and insurance and ask for references for whatever industry you are in need of. you can check online at www.michigan.gov/bcclicense.
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