In 1981, when the gypsy moth outbreak was at its height, it affected 6 million hectares of forest. Over the past century, various strategies have been tried in the USA, from spraying with all kinds of pesticides to sending out schoolchildren to catch the insects.
一九八一年舞毒蛾危害最烈時，曾經盤據六百萬公頃森林，百年來美國試過噴灑各種藥劑、發動學童捕抓等等對策，至今仍無法掌握舞毒蛾大發生的頻率。