Consultation on Mustard Seed Powder (Brassica hirta) and Sodium Alpha-olefin Sulfonate and Their Associated End-use Products, Proposed Re-evaluation Decision PRVD2021-09

Notice to the reader

The online consultation is now closed.

Health Canada is consulting Canadians on the proposal to continue registration of mustard seed powder (Brassica hirta) and sodium alpha-olefin sulfonate and all associated end-use products registered for sale and use in Canada.

As a result of the re-evaluation of mustard seed powder and sodium alpha-olefin sulfonate, no additional risk mitigation measures are proposed by Health Canada. When the current label directions are followed, potential risks to human health and the environment are considered to be acceptable. However, label updates are proposed to meet the current labelling standards.

Mustard seed powder and sodium alpha-olefin sulfonate are registered to control Richardson ground squirrels and Norway rats. They are used in rangeland, ornamental plantings, orchards, golf courses, parks, nurseries and non-crop rights-of-way.

For a full list of products containing mustard seed powder and sodium alpha-olefin sulfonate, please consult Appendix I in the Proposed Re-evaluation Decision or visit the Pesticide Label Search database.

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

How to Get Involved

This consultation is open for comment from 30 July 2021 to 28 October 2021 (90 calendar days).

To comment on PRVD2021-09:

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: PRVD2021-09, Mustard Seed Powder (Brassica hirta) and Sodium Alpha-olefin Sulfonate and their 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

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

Interested in our other consultations? Sign up and stay informed about topics that matter to you.

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