Did you know that many people in Australia consider kangaroos to be a nuisance animal? Because there are so many of them, they are often forced to look for food in farmer's gardens and fields, and do a lot of damage to crops.
Many farmers have to put up special fences to keep kangaroos from ruining their pastures and crops.
However, you have to get a special permit to kill kangaroos or wallabies, and another permit if the situation becomes so dire that you have to lay down poison.
Most farmers either simply plan to lose some of their crops, or try to plant in areas inaccessible to kangaroos.