Possums and rats pose a risk to our forests and threatened species like the native kōkako.
In 2015, we aerially applied 1080 (sodium fluoroacetate) to approximately 21,500 hectares of parkland and private land in the Hunua Ranges area.
A few months after the last application, monitoring results showed the lowest recorded figures for rats and possums. There was zero per cent found in the kōkako management areas.
A similar Hunua aerial application took place in August-September 2018.
For more information, see How we protect the Hunua Ranges from pests and the Hunua kōkako recovery project.