Re-evaluation Decision RVD2021-04, Lambda-cyhalothrin and Its Associated End-use Products

Pest Management Regulatory Agency
29 April 2021
ISSN: 1925-1025 (PDF version)
Catalogue number: H113-28/2021-04-PDF (PDF version)

Summary

To obtain a full copy of Re-evaluation Decision RVD2021-04, Lambda-cyhalothrin and its associated end-use products please contact our publications office.

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

Table of contents

Re-evaluation decision for lambda-cyhalothrin and associated end-use products

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

Lambda-cyhalothrin is a synthetic pyrethroid insecticide used to control a broad range of insect pests on a wide variety of sites such as greenhouse food crops, terrestrial food and feed crops, shelterbelts, turf, livestock, structural sites and ornamentals. Currently registered products containing lambda-cyhalothrin can be found in the Label Search and in Appendix I.

The Proposed Re-evaluation Decision PRVD2017-03, Lambda-cyhalothrinFootnote 1containing the evaluation of lambda-cyhalothrin and proposed decision, underwent a 90-day consultation period ending on 21 September 2017. PRVD2017-03 proposed cancellation of the use on all food and feed commodities, all indoor structural uses in residential areas, turf application in residential areas, as well as mitigation measures for the remaining uses.

Health Canada received comments (and information) relating to the health, environmental and value assessments. Commenters are listed in Appendix II of RVD2021-04. These comments are summarized in Appendix III of RVD2021-04 along with the responses by Health Canada. These comments and new data/information resulted in revisions to the toxicology, dietary, occupational, and environmental risk assessments (see Science evaluation update), and resulted in changes to the proposed re-evaluation decision as described in PRVD2017-03.

A reference list of information used as the basis for the proposed re-evaluation decision is included in PRVD2017-03, and further information used in the re-evaluation decision is listed in Appendix XI of RVD2021-04. Therefore, the complete reference list of all information used in this final re-evaluation decision includes both the information set out in PRVD2017-03 and the information set out in Appendix XI of RVD2021-04.

This document (Re-evaluation Decision RVD2021-04, Lambda-cyhalothrin and its associated end-use products) presents the final re-evaluation decisionFootnote 2 for the re-evaluation of lambda-cyhalothrin, including the required amendments (risk mitigation measures) to protect human health and the environment, as well as label amendments required to bring labels to current standards. All products containing lambda-cyhalothrin that are registered in Canada are subject to this re-evaluation decision.

Re-evaluation decision for lambda-cyhalothrin

Health Canada has completed the re-evaluation of lambda-cyhalothrin. Under the authority of the Pest Control Products Act, Health Canada has determined that continued registration of products containing lambda-cyhalothrin is acceptable with additional risk mitigation measures. An evaluation of available scientific information found that most uses of lambda-cyhalothrin products meet current standards for protection of human health and the environment and have acceptable value when used according to revised conditions of registration which includes new mitigation measures. Risks were shown to be acceptable when mitigation measures were considered for the following uses:

The following uses of lambda-cyhalothrin are cancelled since health risks were not shown to be acceptable when used according to the current conditions of registration, or when additional mitigation is considered: lettuce, mustard seed (condiment type), all feed uses, all registered commodities from Crop Group 3-07: Bulb Vegetables, and all registered commodities from Crop Group 20: Oilseeds (Revised), except for flax seed, mustard seed (oilseed type), and rapeseed (including canola).

Label amendments, as summarized below and listed in Appendix X of RVD2021-04, are required.

Risk mitigation measures

Registered pesticide product labels include specific directions for use. Directions include risk mitigation measures to protect human health and the environment and must be followed by law. The required amendments, including any revised/updated label statements and mitigation measures, as a result of the re-evaluation of lambda-cyhalothrin, are summarized below. Refer to Appendix X of RVD2021-04 for details.

Cancelled uses to be removed from all product labels:

Human health

Risk mitigation:

To protect workers, consumers, and those entering treated areas from potential dietary, residential, and occupational exposure, the following risk-reduction measures are required for the uses with continued registration of lambda-cyhalothrin in Canada:

Environment

Label improvements to meet current standards:

Risk mitigation:

To protect the environment, the following risk-reduction measures are required:

Next steps

To comply with this decision, the required amendments (mitigation measures and label updates) must be implemented on all product labels no later than 24 months after the publication date of RVD2021-04. Accordingly, both registrants and retailers will have up to 24 months from the date of this decision document to transition to selling the product with the newly amended labels. Similarly, users will also have the same 24-month period from the date of RVD2021-04 to transition to using the newly amended labels, which will be available on the Public Registry.

Refer to Appendix I for details on specific products impacted by this decision.

Other information

Any person may file a notice of objectionFootnote 3 regarding this decision on lambda-cyhalothrin and its associated end-use products 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 the Canada.ca website (Request a Reconsideration of Decision) or contact the PMRA's Pest Management Information Service by phone (1-800-267-6315) or by e-mail (hc.pmra.info-arla.sc@canada.ca).

The relevant test data on which the decision is based (as referenced in PRVD2020-01) are available for public inspection, upon application, in the PMRA's Reading Room (located in Ottawa). For more information, please contact the PMRA's Pest Management Information Service

Appendix I Registered products containing lambda-cyhalothrin in Canada

Table 1 Registered products containing lambda-cyhalothrin in Canada requiring label amendmentsTable 1 footnote 1
Registration Number Marketing Class Registrant Product Name Formulation Type Guarantee
24984 Commercial Syngenta Canada Inc. MATADOR 120EC Emulsifiable Concentrate Or Emulsion Lambda-Cyhalothrin = 120g/L
26646 Commercial Intervet Canada Corp. SABER Insecticide Ear Tag Slow-Release Generator Lambda-Cyhalothrin = 10%
26837 Commercial Syngenta Canada Inc. WARRIOR Insecticide Microcapsule Suspension Lambda-Cyhalothrin = 122g/L
27428 Commercial Syngenta Canada Inc. DEMAND CS Insecticide Microcapsule Suspension Lambda-Cyhalothrin = 100g/L
27829 Commercial Intervet Canada Corp. SABER POUR-ON INSECTICIDE Solution Lambda-Cyhalothrin = 1.0%
27954 Commercial Intervet Canada Corp. SABER ER PREMISE INSECTICIDE Microcapsule Suspension Lambda-Cyhalothrin = 100g/L
28485 Commercial BASF Canada Inc. Prescription Treatment brand 221L Residual Insecticide Formula 2 Pressurized Product Lambda-Cyhalothrin = 0.05%
28946 Commercial Syngenta Canada Inc. LAMBDA-CYHALOTHRIN CS INSECTICIDE Microcapsule Suspension Lambda-Cyhalothrin = 100g/L
29052 Commercial Adama Agricultural Solutions Canada Ltd. SILENCER 120 EC Emulsifiable Concentrate Insecticide Emulsifiable Concentrate Or Emulsion Lambda-Cyhalothrin = 120g/L
30325 Commercial Syngenta Canada Inc. VOLIAM XPRESS Insecticide Suspension Chlorantraniliprole = 100g/L;
Lambda-Cyhalothrin = 50g/L;
30404 Commercial Syngenta Canada Inc. ENDIGO Suspension Thiamethoxam = 141g/L;
Lambda-Cyhalothrin = 106g/L
32427 Commercial Adama Agricultural Solutions Canada Ltd. SILENCER 120 EC LOW VOC Emulsifiable Concentrate Or Emulsion Lambda-Cyhalothrin = 120g/L
33576 Commercial Sharda Cropchem Limited LABAMBA INSECTICIDE Emulsifiable Concentrate Or Emulsion Lambda-Cyhalothrin = 120g/L
24567 Technical Syngenta Canada Inc. LAMBDA-CYHALOTHRIN TECHNICAL INSECTICIDE Liquid                              Lambda-Cyhalothrin = 89%
29026 Technical Adama Agricultural Solutions Canada Ltd. Lambda-Cy Technical Insecticide Dust Or Powder                      Lambda-Cyhalothrin = 98.1%
30818 Technical Syngenta Canada Inc. Lambda-Cyhalothrin Technical 2 Insecticide Solid Lambda-Cyhalothrin = 98%
31604 Technical Nufarm Agriculture Inc. NUFARM LAMBDA-CYHALOTHRIN TECHNICAL Solid Lambda-Cyhalothrin = 97.0%
31668 Technical UPL NA Inc. UPI Lambda-Cyhalothrin Technical Insecticide Solid Lambda-Cyhalothrin = 95.95%
31859 Technical Sharda CropChem Limited Sharda Lambda-Cyhalothrin Technical Insecticide Solid Lambda-Cyhalothrin = 95.27%
Table 2 Registered products containing lambda-cyhalothrin in Canada that do not require label amendmentsTable 2 footnote 1
Registration Number Marketing Class Registrant Product Name Formulation Type Guarantee
32243 Manufacturing Concentrate Nufarm Agriculture Inc. NUP-14001 MUP Solution Imidacloprid = 19.19%;
Lambda-Cyhalothrin = 3.84%

Footnotes

Footnote 1

"Consultation statement" as required by subsection 28(2) of the Pest Control Products Act.

Return to footnote 1 referrer

Footnote 2

"Decision statement" as required by subsection 28(5) of the Pest Control Products Act.

Return to footnote 2 referrer

Footnote 3

As per subsection 35(1) of the Pest Control Products Act.

Return to footnote 3 referrer

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