Some approved substances require a permission before you can use them. Find out which substances require a permission and how to apply.
If you are unsure whether your product requires a permission from the EPA, you can search the HSNO Approvals Register or the HSNO Controls database and check the controls that apply.
If you are undertaking a plant pest control operation in an aquatic environment or applying certain herbicides on or into water or near enough that it can reasonably be expected that the substance will enter water you may need to obtain permission from the EPA.
If you are planning to use a herbicide with one of the following active components you will need a permission: metsulfuron-methyl, haloxyfop-R-methyl, imazapyr isopropylamine, triclopyr trimethylamine or endothall (Aquathol K and Aquathol super K).
To apply please fill in the application form below and send it into the EPA.
For sodium nitrite control operations on feral pigs on any land not administered by the Department of Conservation, a permission is required from the EPA.
To request a permission be granted, please use the application form for sodium nitrite permissions and send it to the EPA.
Vertebrate Toxic Agents (VTAs)
If you are undertaking a pest control operation that requires the use of certain vertebrate toxic agents (VTAs), you may need a permission from the Department of Conservation (DOC) and/or the Public Health Unit (PHU) of the local District Health Board.
If you are using a VTA that requires a permission from the PHU, you will need to make an application on the approved application form, available from the Ministry of Health.
You will need a permission from DOC to use any VTA on land administered or managed by DOC. To obtain this Permission, contact your local Department of Conservation office.
You can find out more about when a permission is required in the guidance document.