Special Review Decision SRD2021-01, Special Review of Tetrachlorvinphos and Its Associated End-use Products

Pest Management Regulatory Agency
3 March 2021
ISSN: 2561-6269 (PDF version)
Catalogue number: H113-17/2021-1E-PDF (PDF version)

Summary

To obtain a full copy of Special Review Decision SRD2021-01, Special Review of Tetrachlorvinphos 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

Special Review Decision

Pursuant to subsection 17(1) of the Pest Control Products Act, Health Canada’s Pest Management Regulatory Agency (PMRA) conducted a special review of tetrachlorvinphos, based on the toxicology information submitted under section 12 of the Pest Control Products Act, following the re-evaluation of tetrachlorvinphos (Canada, 2003; and Canada, 2004). The aspects of concern identified for the special review are potential occupational and residential risks. Health Canada evaluated the aspects of concern that prompted the special review in accordance with subsection 18(4) of the Pest Control Products Act. Please refer to the PMRA Guidance Document, Approach to Special Reviews of Pesticides for additional information on special review triggers and the processes.

The document (Special Review Decision SRD2021-01, Special Review of Tetrachlorvinphos and Its Associated End-use Products) presents the final regulatory decisionFootnote 1 for the special review of tetrachlorvinphos. All pest control products containing tetrachlorvinphos that are registered in Canada are subject to this special review decision (Appendix I). Prior to finalizing this decision, Health Canada published the Proposed Special Review Decision, PSRD2019-04, Special Review of Tetrachlorvinphos and Its Associated End-use Products Footnote 2 for 45-day consultation.

Comments and additional information were received during consultation period. Comments are summarized in Appendix II of SRD2021-01 with the responses from Health Canada. The final special review decision considered the comments and information received during the consultation of PSRD2019-04. The outcome of the revised assessment of the aspects of concern based on additional information received is outlined below:

Following an evaluation of the aspects of concern, Health Canada has determined that continued registration of certain uses/products containing tetrachlorvinphos is acceptable with additional mitigation measures (Appendix IV of SRD2021-01). On this basis, Health Canada is confirming the registration for the following products containing tetrachlorvinphos for sale and use in Canada with additional risk mitigation measures, pursuant to subsection 21(1) of the Pest Control Product Act:

Commercial-class

Domestic-class

The assessment indicated that the potential risk to human health for the following uses of tetrachlorvinphos is not considered to be acceptable, and these uses are cancelled, pursuant to subsection 21(2)(b) of the Pest Control Product Act:

Commercial-class

Domestic-class

Next steps

To comply with this decision, the required amendments (mitigation measures and label updates) must be implemented on all product labels sold by registrants no later than 24 months after the publication date of SRD2021-01. 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 this decision document to transition to using the newly amended labels, which will be available on the Public Registry.

Certain tetrachlorvinphos products are to be cancelled since these product labels have no uses that are acceptable for continued registration as a result of this special review. Products that are cancelled will be phased out following the implementation timeline outlined below:

Other Information

Any person may file a notice of objectionFootnote 3 regarding this decision on tetrachlorvinphos within 60 days from the date of publication of this special review 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 Registered products containing tetrachlorvinphos as of 17 December 2020

Table 1: Products requiring label amendments
Registration Number Marketing Class Registrant Product Name Formulation Type GuaranteeFootnote 1
23019 Technical Grade Active Ingredient The Hartz Mountain Corporation Hartz Rabon Technical Insecticide (Tetrachlorvinphos) Solid 98.7%
25338 Technical Grade Active Ingredient Elanco Canada Limited Technical Rabon Insecticide Dust or powder 98.7%
17415 Commercial Elanco Canada Limited Debantic 50 WP Insecticide Poultry and Livestock Premises Spray Wettable powder 50%
22880 Commercial Bayer Inc. Ectogard Insecticide Cattle Ear Tag Solid 14.0%
25654 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Spray For Dogs Solution 1.08%
25655 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Spray For Cats Solution 1.08%
30181 Domestic Hartz Canada Inc. Hartz Ultraguard Plus Flea & Tick Spray For Dogs With Aloe Solution Tetrachlorvinphos 1.08%
s-methoprene 0.07%
Table 2: Products cancelled as a result of this special review
Registration Number Marketing Class Registrant Product Name Formulation Type GuaranteeTable 2 footnote 1
13266 Domestic Hartz Canada Inc. Hartz Incontrol Flea & Tick Collar For Cats Slow release generator 14.55%
16673 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Powder For Dogs Dust or powder 3.3%
17959 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Powder For Cats Dust or powder 3.3%
18108 Domestic Hartz Canada Inc. Hartz Incontrol Flea & Tick Collar For Dogs Slow release generator 14.55%
25381 Domestic Hartz Canada Inc. Hartz Ultraguard Plus Flea & Tick Collar For Cats & Kittens Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
25382 Domestic Hartz Canada Inc. Hartz Ultraguard Plus Flea & Tick Collar For Dogs & Puppies Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
25620 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Collar For Dogs Slow release generator 14.55%
25621 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Collar For Cats & Kittens Slow release generator 14.55%
28355 Domestic Hartz Canada Inc. Hartz Ultraguard Reflective Flea & Tick Collar For Dogs & Puppies Slow release generator 14.55%
28356 Domestic Hartz Canada Inc. Hartz Ultraguard Reflective Flea & Tick Collar For Cats & Kittens Slow release generator 14.55%
29475 Domestic Hartz Canada Inc. Hartz Ultraguard Flea & Tick Collar For Large Dogs Slow release generator 14.55%
29476 Domestic Hartz Canada Inc. Hartz Ultraguard Flea And Tick Collar For Puppies Slow release generator 14.55%
29720 Domestic Hartz Canada Inc. Hartz Ultraguard Plus Flea & Tick Collar For Dogs And Puppies With Reflect-X Shield Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
29721 Domestic Hartz Canada Inc. Hartz Ultraguard Plus Flea & Tick Collar For Cats And Kittens With Reflect-X Shield Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
31439 Domestic Wellmark International Vet-Kem Breakaway Flea & Tick Collar For Cats & Kittens Slow release generator 14.55%
31440 Domestic Wellmark International Vet-Kem Flea & Tick Collar For Dogs Slow release generator 14.55%
31441 Domestic Wellmark International Vet-Kem Ovitrol Breakaway Dual Action Flea & Tick Collar For Cats & Kittens Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
31443 Domestic Wellmark International Vet-Kem Ovitrol Dual Action Flea & Tick Collar For Dogs & Puppies Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
31444 Domestic Wellmark International Zodiac Breakaway Flea & Tick Collar For Cats & Kittens Slow release generator 14.55%
31445 Domestic Wellmark International Zodiac Flea & Tick Collar For Dogs Slow release generator 14.55%
31446 Domestic Wellmark International Zodiac Power Band Plus Breakaway Dual Action Flea & Tick Collar For Cats & Kittens Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%
31473 Domestic Wellmark International Zodiac Power Band Plus Ii Dual Action Flea & Tick Collar For Dogs & Puppies Slow release generator Tetrachlorvinphos 14.55%
s-methoprene 1.02%

 

Footnotes

Footnote 1

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

Return to footnote 1 referrer

Footnote 2

“Consultation statement” as required by subsection 28(2) 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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