A Canterbury professor says he has potentially found a better, more humane, option than 1080.
Scientist Rudi Marquez-Mazlin discovered a compound that sterilises pests by inducing the early onset of menopause.
He tells Jesse how he found the active ingredient by chance when he was involved in cancer research.
Tāne resets a DOC200 trap, a freshly killed Norwegian rat in the foreground Photo: RNZ/Sally Round