TURJAUL Umur, a resident of Tigasan Wetan village in Leces district, Probolinggo, East Java, was forced to evacuate his teenage son to his mother’s house. Andika, the boy, was shocked when he saw thousands of caterpillars swarming on the wall outside his room. They have never seen so many caterpillars in their entire life.

Early last week, as soon as they saw the hairy caterpillars, Turjaul and his son immediately reached for liquid mosquito r