A fumigating composition for exterminating pests contains a mixture of a pyrethroid-type compound of the general formula
wherein R1 is a hydrogen atom or a methyl group, R2 is a 2-methyl-propenyl group when R1 is a hydrogen atom and a methyl group when R1 is a methyl group, and X is a 2-allyl-3--methyl-cyclopent-2-ene-1-one-4-yl group or a 2-propargy!-3--methylcyclopent-2-ene-1-one-4-yl group; and 2,3,4,5,6-pentafluorobenzyl 2,2-dimethyl-3-(2,2-dichlorovinyl) cyclopropanecarboxylate. The composition has an excellent synergistic effect.
一种用于灭虫的熏蒸组合物含有通式为 R1 为氢原子或甲基、R2 为
2-甲基丙烯基(当 R1 为氢原子时)和甲基(当 R1 为甲基时)的拟
除虫菊酯类化合物与 2,3,4,5,6-五
氟苄基 2,2-二甲基-3-(2,2-二
氯乙烯基)
环丙烷羧酸酯的混合物。 该组合物具有极佳的增效作用。