APP205053 Reassessment of bioresmethrin, cyhalothrin and fenvalerate

The EPA has initiated a full reassessment of bioresmethrin, cyhalothrin and fenvalerate because information about its human health and environmental risks suggests the risks from its use outweigh the benefits.  The approvals for bioresmethrin, cyhalothrin and fenvalerate and substances containing them are being reassessed under section 63 of the Hazardous Substances and New Organisms Act 1996 (HSNO Act).  [i]Note that the related insecticides lambda-cyhalothrin and esfenvalerate are still in use in NZ and are not included in the scope of this reassessment. They will be reviewed in a later synthetic pyrethroid group reassessment.[/i] These three substances are synthetic pyrethroid insecticides.  We propose to ban the use of bioresmethrin, cyhalothrin and fenvalerate by revoking their approvals. The ban would mean bioresmethrin, cyhalothrin and fenvalerate can no longer be imported, manufactured or used in New Zealand.   These three insecticides have high human health hazards and very high aquatic hazards and we think they are currently not being used in New Zealand. This means they are potentially high risk and we would like to get rid of the approvals for these substances.       The application documents can be found here:  [url=https://www.epa.govt.nz/database-search/hsno-application-register/view/APP205053/]HSNO application register | EPA[/url]   [u]Feedback we’re seeking [/u] We’d like to get your feedback on our proposal to ban bioresmethrin, cyhalothrin and fenvalerate. To help prompt your responses we have asked questions for you to consider. We also welcome any general feedback on the reassessment.  While we will consider all information provided in submissions, we are particularly interested in whether these substances are in use in New Zealand. Please provide any information you may have regarding:  - use of these substances, - the types of products they are in - the approvals they are using.   [b]Submissions close at 5.00 pm on 6 March 2026.  [/b] [u]Publishing submissions [/u] All submissions (including submitter names) will be published on our website at [url=http://www.epa.govt.nz/]www.epa.govt.nz[/url]. We will not publish any personal contact details.   [u]Confidential information [/u] If you think your submission contains confidential information, please make this clear in your submission. Reasons may include, for example, that the information discloses commercially sensitive information.   If you would like more information about how we treat confidential information, see the section [url=https://www.epa.govt.nz/industry-areas/hazardous-substances/making-an-application/supplying-confidential-or-commercially-sensitive-information-under-the-hsno-act/]Supplying confidential or commercially sensitive information under the HSNO Act[/url] on our website.   [u]Privacy statement [/u] The EPA is collecting your personal information for the purpose of considering feedback on the proposals in this document. We will store your personal information securely. We may use your contact details to contact you about your submission if necessary. You have the right to access the personal information we hold about you and to ask for it to be corrected if it is wrong. If you would like to access your personal information, or have it corrected, please contact us at [url=mailto:info@epa.govt.nz]info@epa.govt.nz[/url].    [u]Official information [/u] The Official Information Act 1982 (OIA) applies to all information held by the EPA (subject to section 55 of the Hazardous Substances and New Organisms Act 1996), and information may be released under the OIA unless there are grounds to withhold it. Further information on the OIA is at [url=http://www.ombudsman.parliament.nz/]www.ombudsman.parliament.nz[/url] Please fill in the form below, then click Continue to review your submission. At any time you may click Save and Exit so that you can return later.