瑞士龙沙公司与广州农药厂合作生产的6％密达（Meta）颗粒剂为一种新的特效杀螺剂，它能杀灭蜗牛、蛞蝓、福寿螺等软体动物。该药具引诱特性。当蜗牛、蛞蝓等软体动物足部接触或进食后，即能产生触杀和胃毒作用，导致快速麻痹，分泌粘液，使体液大量流失，细胞被破坏而短时间内 6% Meta Granules, a joint venture between Lonza and Guangzhou Pesticide Factory, is a new special effect mollusc that can kill molluscs such as snails, slugs and snails. The medicine attracts features. When snails, slugs and other mollusks foot contact or eating, that can produce contact and stomach poisoning, leading to rapid paralysis, secretion of mucus, so that a substantial loss of fluid, the cell is destroyed and a short period of time