The cane toad was originally supposed to help the people in Australia control cane beetles that were destroying their sugar crops. It helped destroy the cane beetles but there was nothing to destroy them since they're toxic to most things that try to eat it and they reproduce often, like rabbits. To try and control the cane toad population the Australian government has tried fencing to contain them, trapping them, disease, and introducing sterile males to the population. None of these has effectively controlled the population. In the United States we have a similar problem with Wild Boars. Wild Boars were originally found in Europe, Asia, Northern Africa, Japan, and the Malayan Islands. It was brought to the U.S. by Spanish explorers as domestic pigs. Since they were brought here in 1539 they have cause damaged to crops all over the U.S. they are low to the ground and they have hard hooves so whenever they walk they are destroying crops. That isn't even including the diseases they spread. The wild boars can carry many diseases that infect domestic livestock and if the livestock's meat is consumed by humans it infects us too. They are near the livestock because they're attracted to their food. There have been methods to try and fix this problem but none are successful yet. In the southern states where the problem is biggest they hunt the pigs with dogs and guns. The only other thing that the farmers can do is keep their fences maintained and set traps so the pigs can't get in. The cane toad, the rabbits, and the wild boars have all costs thousands of dollars in damage to the countries they are not native to and those countries are still trying to figure out what to do about the problem.
