Quite simple really. I hop onto your fab website, search the weeds, identify those that I have seen about the garden/farm/roadside that I dont already know of and dispose of and I dig up and burn the weeds. With having livestock and especially horses, I am very aware and cautious when it comes to weeds, and I get great pleasure out of helping to make NZ a weed free, safe, healthy environment for native plant life, animals, and ourselves.