What additional requirement is needed, besides an exterminator's licence, to legally apply a class B or C pesticide with a label indicating picloram in land extermination in Ontario?

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Some pesticides, especially high‑risk ones like picloram used for land extermination, require an extra authorization beyond simply holding an exterminator licence. That extra authorization is a land-extermination permit. It provides site‑specific approval to use the product, ensuring you follow the label directions and put safeguards in place to protect people, non-target organisms, and the environment. Picloram can persist in the environment and pose groundwater and ecological risks, so the permit reviews the exact land where the product will be applied, limits on timing, and required practices (such as buffers and record-keeping). Without this permit, even with a valid licence, the application would not be legally allowed. Storage or import permits aren’t the additional requirement here, and certification is already part of being licensed.