Tea seed meal is the residue of camellia seeds after extracting camellia oil. It’s active content is tea saponin ,which has hemolysis to red blood cell. So it is widely used to kill snails, earthworm ,cutworm and some fishes in the shrimp or crab pond .There are four types including tea seed meal with straw ,tea seed meal without straw ,tea seed pellet, tea seed powder.