The question is how much should be used to be both safe and economical. According to Li Kuo-cheng, the head of the Plant Protection Center in Taiwan, "At the present time, the biggest problem with pesticides is waste and next is that their use is not safe enough."
台灣植物保護中心的工作就在研究上述問題，主任李國欽說：「目前國內農藥的使用的確過於浪費，並且不夠安全。」