Call for information on synthetic pyrethroids

We are calling for information about the use of synthetic pyrethroids in New Zealand.

We recently determined that there are grounds to reassess 11 synthetic pyrethroid insecticides which are used in a variety of settings, including in agriculture, bed bug and flea treatments, and in household fly sprays and automatic dispensers.

Nine of the synthetic pyrethroids we are seeking information for are listed on the newly released priority chemicals list which are around 40 chemicals that we believe are most in need of review.

Read more about the Priority Chemicals List

We are calling for information on products containing any of the 11 synthetic pyrethroids, which are available in off-the-shelf products for use in the home and garden, and products used professionally in the agriculture and commercial sectors (for example in crop protection products, timber treatments, and veterinary medicines).

Information we're looking for

Responding to this call for information is voluntary. We appreciate any information industry and users can provide us with on the current use, practices, and benefits of these synthetic pyrethroids. This could include information relating to the adverse effects of the substances including toxicology, ecotoxicology, and environmental fate studies.

Current human health and environmental effects information from any existing research projects analysing the use of synthetic pyrethroids is also appreciated.

We will review the current uses of these substances and undertake an assessment of those uses. There will be an opportunity for interested parties to make formal submissions on our assessment and proposal, when the application is publicly notified.

The better information we have, the better decisions we can make. We have created a list of questions that we think will help us get the information that we need to complete our assessment.

The synthetic pyrethroid insecticides we are seeking information on are: 

  • Bifenthrin
  • Bioresmethrin
  • Cyfluthrin
  • Cyhalothrin
  • Cyhalothrin, lambda
  • Cypermethrin
  • Cypermethrin, alpha
  • Deltamethrin
  • Permethrin
  • Fenvalerate
  • Tetramethrin

Time period

You have until Friday 1 February 2019 to send us a response regarding use of products in and around the home.

We have extended the deadline period for agricultural and other commercial, non-home use products until Friday 1 March 2019.

How to make a response

Paper response

You can provide your information by completing the response to the call for information form and emailing your form to

There are application documents for the grounds to reassess these synthetic pyrethroids.

Download the response to the call for information form

Read the grounds for reassessment documents

Online response

You can provide a response using our online response form.

Complete an online response form

To help you with your response, you can download and attach the following tables:

Synthetic Pyrethroids consultations - Table A: Trade name and packaging information

Synthetic Pyrethroids consultations - Table B: GAP Table

Synthetic Pyrethroids consultations - Table C: Use Table for other product uses