Consultation on Carbon Dioxide and its associated end-use products, Proposed Re-evaluation Decision PRVD2025-03

Notice to the reader:

The online consultation is now closed.

Health Canada is consulting Canadians on the proposal to continue registration of carbon dioxide and associated end-use products registered for sale and use in Canada, with proposed updates to standard label statements.

The registered shipboard, in-transit ship, and ship hold fumigation uses of carbon dioxide are no longer supported for continued registration by the registrant; therefore, these uses of carbon dioxide will be removed from the end-use product label.

Carbon dioxide is an insecticide and rodenticide fumigant. It is registered for use as a fumigant gas for the control of insects in grain and flour storage areas and for the control of rodents in aircraft fuselage. The shipboard, in-transit ship, and ship hold fumigation uses of carbon dioxide are no longer supported and are not considered as part of this re-evaluation. Carbon dioxide is applied using pressurized containers and fumigation equipment suitable for dispensing gas.

Currently, there is one technical grade active ingredient and one restricted-class end-use product containing carbon dioxide registered in Canada. These products can be found in the Pesticide Product Information Database and in Appendix I of the full version of Proposed Re-evaluation Decision PRVD2025-03, Carbon Dioxide and its associated end-use products. Appendix II of PRVD2025-03 lists all uses for which carbon dioxide is presently registered that are supported by the registrant.

With respect to human health and the environment, risks are considered to be acceptable when carbon dioxide is used according to the proposed conditions of registration, which include the implementation of the proposed mitigation and label amendments outlined below and in Appendix III of PRVD2025-03.

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

How to get involved

This consultation is open for comment from 28 February 2025 to 29 May 2025 (90 calendar days).

To comment on PRVD2025-03:

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 Proposed Re-evaluation Decision PRVD2025-03, Carbon Dioxide and its associated end-use products.

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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