Re-evaluation Decision RVD2018-35, Cyfluthrin and Its Associated End-use Products

Pest Management Regulatory Agency
31 October 2018
ISSN: 1925-0886 (PDF version)
Catalogue number: H113-9/2018-35E-PDF (PDF version)

To obtain a full copy of  Re-evaluation Decision RVD2018-35, Cyfluthrin and Its Associated End-use Products please contact our publications office.

Should you require further information please contact the Pest Management Information Service.

Summary

Table of Contents

Re-evaluation Decision

Under the authority of the Pest Control Products Act, all registered pesticides must be regularly re-evaluated by Health Canada’s Pest Management Regulatory Agency (PMRA) to ensure that they continue to meet current health and environmental safety standards and continue to have value. The re-evaluation considers data and information from pesticide manufacturers, published scientific reports and other regulatory agencies. The PMRA applies internationally accepted risk assessment methods as well as current risk management approaches and policies.

Cyfluthrin is a synthetic pyrethroid insecticide. There are two technical grade active ingredients, three commercial class and four domestic class end-use products registered. The commercial class cyfluthrin products, targeting flying and crawling insects, are applied by pest control applicators to residential and commercial sites using hand pressurized and power operated sprayers. They are also applied by farmers to livestock housing structures. The other commercial products are for use by the cattle industry as a pour-on to control horn fly and lice, or as an insecticide-impregnated ear tag for horn fly control. The domestic products are available as pressurized spray cans for use indoors to target household pests such as ants, earwigs, cockroaches and spiders. Currently registered products containing cyfluthrin are listed in Appendix I.

The document (Re-evaluation Decision RVD2018-35, Cyfluthrin and Its Associated End-use Products) presents the final regulatory decisionFootnote 1 for the re-evaluation of cyfluthrin, including the required risk mitigation measures to protect human health and the environment. All products containing cyfluthrin that are registered in Canada are subject to this re-evaluation decision. This re-evaluation decision has undergone a 90-day consultation period on the Proposed Re-evaluation Decision PRVD2016-17, CyfluthrinFootnote 2 in which continued registration of cyfluthrin was proposed with requirements of new risk-reduction measures for the commercial-class end-use products registered in Canada. Based on potential risks of concern for residential exposure, all domestic-class products and certain residential uses of the commercial-class products were proposed for cancellation. The consultation period ended on 15 December 2016.

Health Canada received comments relating to the health risk and value assessments. These comments are summarized in Appendix II of RVD2018-35 along with the responses by Health Canada. The comments and new information resulted in revisions to the risk assessments (see Science Evaluation Update section of RVD2018-35), and subsequently, in changes to the proposed regulatory decision as described in PRVD2016-17. A reference list of data used as the basis for the proposed re-evaluation decision is included in PRVD2016-17, and further data used in the re-evaluation decision is listed in Appendix XI of RVD2018-35.

Regulatory Decision for Cyfluthrin

Health Canada has completed the re-evaluation of cyfluthrin. Under the authority of the Pest Control Products Act, Health Canada has determined that continued registration of products containing cyfluthrin is acceptable. An evaluation of available scientific information found that uses of cyfluthrin products meet current standards for protection of human health and the environment when used according to the conditions of registration, which include required amendments to label directions. Label amendments listed in Appendix III of RVD2018-35, are required for all technical and end-use products. No additional data are requested.

Risk Mitigation Measures

Registered pesticide product labels include specific instructions for use. Directions include risk reduction measures to protect human health and the environment. These directions must be followed by law. The key risk-reduction measures required, as a result of the re-evaluation of cyfluthrin, are summarized below.

Human Health

Commercial Class Product (Tempo 20 WP):

  • To address the potential for respiratory effects identified in incident reports reviewed by Health Canada and to ensure consistency with the approach taken for the recently approved commercial-class products containing beta-cyfluthrin (Registration Decision RD2017-01):
    • The re-entry interval of 8 hours proposed in PRVD2016-17 will be reduced to 6 hours.
    • Commercial applicators will be required to ventilate after application.
    • Commercial applicators will be required to post or give an information sheet to occupants (informing them of the product that was applied, the re-entry interval, and potential adverse effects and what to do if they experience these effects).
  • The label statements must be updated to include the potential adverse effects and what to do if occupants experience these effects.
  • To clarify use directions, label statements for the agricultural use in livestock housing, for which broadcast application is permitted, must be separated from the label statements for all other indoor uses for which broadcast application is prohibited.
  • A label statement must be added to clarify that broadcast application is not permitted for indoor uses, with the exception of livestock housing.
  • A label statement must be added to clarify that application to furniture, mattresses, linens, pet bedding, toys or clothing is not permitted.

Domestic Class Products:

  • To address the potential for respiratory effects identified in incident reports:
    • A label statement directing users to ventilate treated areas must be added.
    • The label statements must be updated to include the potential adverse effects and what to do if occupants experience these effects. This information is required because, unlike the commercial-class products that require the applicators to post or give an information sheet to occupants with the necessary information, the domestic-class products are applied by the occupants.
  • Since only spot treatment is allowed, label statements prohibiting all other types of applications (general surface spray/broadcast, space spray, and perimeter) and defining spot application must be added.

Environment

Precautionary statements are required to inform users of potential toxic effects on aquatic organisms and mammals.

Next Steps

To comply with this decision, the required mitigation measures must be implemented on all product labels sold by registrants no later than 24 months after the publication date of this decision document. Appendix I lists the products containing cyfluthrin that are registered under the authority of the Pest Control Products Act.

Other Information

Any person may file a notice of objectionFootnote 3 regarding this decision on cyfluthrin within 60 days from the date of publication of this Re-evaluation Decision. For more information regarding the basis for objecting (which must be based on scientific grounds), please refer to the Pesticides section of Canada.ca (Request a Reconsideration of Decision) or contact the PMRA’s Pest Management Information Service.

Appendix I Products Containing Cyfluthrin Registered in Canada as of 22 May 2018

Table 1 Products Containing Cyfluthrin Registered in Canada as of 22 May 2018
Registration Number Marketing Class Registrant Product Name Formulation Type ACTIVE INGREDIENT
23939 Technical Bayer CropScience Inc. Cyfluthrin Technical Insecticide Not applicable 95.6% cyfluthrin
25672 Technical Bayer CropScience Inc. Cyfluthrin Technical Not applicable 98.0% cyfluthrin
25673 Commercial Bayer CropScience Inc. Tempo 20 WP Insecticide Wettable powder 20.0% cyfluthrin
25674 Commercial Bayer Inc. Cylence Pour-On Insecticide Solution 1.0% cyfluthrin
26880 Commercial Bayer Inc. Cylent Gold Insecticide Cattle Ear Tag Slow Release Generator 10.0% cyfluthrin
30355 Domestic S.C. Johnson And Son Ltd Raid® Ant Roach & Earwig Bug Killer 19 Pressurized product 0.05% cyfluthrin, 0.2% pyrethrins, 0.48% piperonyl butoxide
30356 Domestic S.C. Johnson And Son Ltd Raid® Spider Blaster Bug Killer 4 Pressurized product 0.05% cyfluthrin, 0.2% pyrethrins, 0.48% piperonyl butoxide
30357 Domestic S.C Johnson And Son Ltd Raid Max® Crawling Insect Bug Killer 3 Pressurized product 0.05% cyfluthrin, 0.2% pyrethrins, 0.48% piperonyl butoxide
30640 Domestic S.C. Johnson And Son Ltd Raid® Max Spider Blaster Bug Killer Pressurized product 0.05% cyfluthrin, 0.2% pyrethrins, 0.48% piperonyl butoxide
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