After being stung by complaints, Taiwanese officials have traced the mysterious yellow gunk that has splattered cars and laundry for weeks to a seasonal influx of bees, and their droppings. Bees attracted to farms and plant nurseries near the densely populated city of Kaohsiung have smothered a neighbourhood with their droppings since February, alarming and irritating residents who could not figure out where the mess was coming from. Chen Kung-fu, a vice section chief with the municipal environmental protection unit, said Friday an investigation was launched into the matter after residents complained of splodges on on almost every parked car as well as clothes left outside to dry. “Bees are hard to stop because of their flight speed,” Chen said. “But the faeces can't hurt people.”