... Matrine(Extracted from natural plant the Sophora, Flavescens, Ait.) Target Insects: Mites, Red spiders, Armyworm, Cabbage caterpillar, Whitefly, Leaf ... can be used as insect repellents, matrine can repell against insects very effectively, so matrine can be used as repell ... matrine can paralyze the nervous systems of insects. 5. No killing beneficial insects. The matrine is extracted from Botanic source ...