Farming Farming machine takes off 15/09/2017 Facebook Twitter Email WEED KILLER: Western Australian farmer and creator of the integrated Harrington Seed Destructor Ray Harrington visited the Royal Adelaide Show last week to talk about the creation of the machine which is manufactured in Mount Gambier. WEED KILLER: Western Australian farmer and creator of the integrated Harrington Seed Destructor Ray Subscribe or log in to read the rest of this content.