Changes to the registration of piperonyl butoxide pesticides (agricultural uses)
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Organization: Health Canada
ISBN: 978-0-660-71982-5
Date published: 2024-07-26
All pesticides used in Canada must be registered under the Pest Control Products Act. Pesticides are re-evaluated to ensure that they continue to meet health and environmental requirements. Re-evaluation may result in the revocation of a product or product uses. Health Canada may also request changes to a product's label, including mitigation measures, use sites and application methods.
Piperonyl butoxide is a product that is always combined with an insecticide to improve its effectiveness. These insecticides are used in a wide range of locations. The highlights of the re-evaluation decision concerning the agricultural uses of the active ingredient piperonyl butoxide, published on March 2, 2023, are summarized below.
In this factsheet, agricultural uses include use in agriculture, horticulture and domestic gardens.
Cancelled Products
| Cancelled product | Last date of sale | Last date of use |
|---|---|---|
| Domestic products listed in Appendix 1, Table 2 of the re-evaluation decision | March 2, 2024 | September 2, 2024 |
| Products listed in of Appendix 1, Table 4 of the re-evaluation decision | March 2, 2025 | March 2, 2026 |
Label changes for piperonyl butoxide pesticides
Cancelled uses
As of March 2, 2025
- Stop post-harvest use on bulked or bagged stored grains
As for March 2, 2026
- Stop the following uses of domestic products:
- on food crops grown in greenhouses
- in home gardens
Other risk reduction measures, as of March 2, 2025
- Limit to the number of applications to soil and ornamentals
- Updated restricted-entry intervals (REI)
- Updated personal protective equipment (PPE) requirements
- Limit to the amount of product handled per day
- Limit to the cumulative dose applied per year
- Prohibited use of domestic greenhouse products in commercial greenhouses
- Added warnings about potential damage to plants following foliar applications
- Added statements to protect bees, beneficial arthropods and aquatic organisms
Users must follow the instructions on the updated labels.
Using a pesticide contrary with the label directions is a violation of the Pest Control Products Act.
Read the label
All pesticides registered in Canada have a Health Canada-approved label with a registration number. Read the pesticide label carefully, as it contains specific information on how to use it.
To find the most up-to-date label, use our online label search tool, or search for "Health Canada pesticide labels" using your favourite search engine.
For more information
Re-evaluation decision RVD2023-07, Piperonyl butoxide and its associated end-use products. The Health Canada-approved label is the official document for law enforcement. In case of discrepancy with the contents of this information sheet, the information on the label prevails.
Health Canada's Pesticide Compliance Program (PCP) is responsible for the enforcement of the Pest Control Products Act.