Consultation on (Z)-9-tricosene and its associated end-use products, Proposed Re-evaluation Decision PRVD2022-07

Notice to the reader:

The online consultation is now closed.

Health Canada is consulting Canadians on the proposal to continue registration of (Z)-9-tricosene and all associated end-use products registered for sale and use in Canada.

(Z)-9-tricosene, also known as muscalure, is used for the control of flies and acts as a fly attractant. It is a semiochemical that is produced by the female house fly, Musca domestica. (Z)-9-tricosene commercial end-use products are registered for use in and around animal/livestock housing or in residential/commercial structures and inside transport vehicles. The commercial class end-use products are co-formulated with conventional insecticides and are available as bait stations, sprays or brushable paint. The domestic class end-use product is not co-formulated with any other insecticide and is registered for outdoor use around residential and farm buildings to reduce fly populations using physical traps.

(Z)-9-tricosene has a non-toxic mode of action and has value in providing a pest management solution. Based on the current use pattern of (Z)-9-tricosene, dietary exposure is not anticipated. The potential risks to human health (occupational, residential, and bystander) and environment (terrestrial and aquatic organisms) are considered to be acceptable when products containing (Z) 9-tricosene are used according to label directions. As a result of re-evaluation, no additional mitigation measures are proposed.

For a full list of products containing (Z)-9-tricosene, 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 26 April 2022 to 25 July 2022 (90 calendar days).

To comment on PRVD2022-07:

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: PRVD2022-07, (Z)-9-tricosene 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

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.

Page details

Date modified: