Consultation on methyl nonyl ketone and its associated end-use products, Proposed Re-evaluation Decision PRVD2022-08

Notice to the reader:

This consultation is now closed.

Health Canada is consulting Canadians on the proposal to continue registration of methyl nonyl ketone and all associated end-use products registered for sale and use in Canada.

Methyl nonyl ketone is registered in Canada for use as an animal repellent against cats and dogs in a wide range of indoor and outdoor domestic settings such as on furniture, carpets, flowerbeds, lawns, patios and garbage cans. It can be applied as a spray (indoor and outdoor), or by spreading the granular product by hand or with a fertilizer spreader (outdoor). It acts by confusing the animal's sense of smell and discouraging it from visiting the treated area.

When the current label directions are followed, these products were shown to have value in providing a pest management solution, and potential risks to human health (residential and bystander) and the environment (aquatic and terrestrial organisms and their habitats) are considered to be acceptable. Based on the current use pattern, occupational and dietary exposure are not expected. As a result of the re-evaluation of methyl nonyl ketone, no additional risk mitigation measures are proposed by Health Canada.

For a full list of products containing methyl nonyl ketone, 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 29 April 2022 to 28 July 2022 (90 calendar days).

To comment on PRVD2022-08:

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: PRVD2022-08, Methyl Nonyl Ketone 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.

Report a problem or mistake on this page
Please select all that apply:

Thank you for your help!

You will not receive a reply. For enquiries, contact us.

Date modified: