Consultation on Pyrethrins and Associated End-use Products, Proposed Re‑evaluation Decision PRVD2020-08

Health Canada is consulting Canadians on the proposal to continue registration of products containing pyrethrins in Canada provided that additional proposed risk mitigation measures are put in place to further protect human health and the environment.

Pyrethrins are insecticides registered for use on a wide range of commercial and domestic sites including agricultural crops, greenhouses, livestock, companion animals, structural sites (indoor and outdoor), clothing, and stored grains.

Pyrethrins products are available in various formulations, including dusts, solutions, emulsifiable concentrates, pastes, solids (coils) and pressurized products. All registered products containing pyrethrins can be found in the Pesticide Label Search Results.

Revisions to the pyrethrins labels are also proposed to update label statements to current policies and language. Additionally, Health Canada proposes prohibiting application using mechanically pressurized handheld equipment for mists, aerosols, and fogs, as well as some uses due to the lack of data. Furthermore, to protect food safety and the health of Canadians, Health Canada proposes to:

• Cancel the use of pyrethrins on stored grains
• Revoke the maximum residue limit of 3 ppm on raw cereals
• Establish a plant-back interval of 12 months for all crops other than the ones for which pyrethrins is registered for use.

In addition, data are required to confirm that the application rates and use directions on current product labels are consistent with the rates used in the residential, bystander and occupational risk assessments.

For more information on the proposed decision, including product or use cancellations and risk mitigation measures, open the

For more information on the proposed decision open the “Proposed Re-evaluation Decision”.

How to Get Involved

This consultation is open for comment from 17 September 2020 to 16 December 2020 (90 calendar days).

To comment on PRVD2020-08:

• Step 1: Request the full consultation document to read the Science Evaluation that is the basis of this proposed regulatory decision.
• Step 2: Submit comments to the PMRA Publications Section.

All comments received will be considered. A final re-evaluation decision will consider additional scientific information provided during the public comment period.

Please refer to the document title (for example: PRVD2020-08, Pyrethrins and Its Associated End-use Products) when providing comments.

Reporting to Canadians

Health Canada will make the results of this consultation available on this website. Once the decision is finalized, the PMRA will post a Re-evaluation Decision on the Pesticides and Pest Management Reports and Publications portion of Canada.ca.

If you have any questions, contact the Pest Management Information Service.

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