There is a cave in Thailand that is the roost for nearly six million bats which, every year, eat 35 million tons of mosquitoes and gnats, thus being of great use in the stabilization and balancing of the nocturnal insect population.
泰國有一洞穴棲息著近六百萬隻蝙蝠，每年吃下三千五百萬噸的蚊蟲，對當地夜間蟲相，具有平衡穩定的作用。