Return to menu. Furthermore, permethrin is efficiently metabolized by mammalian livers, and is practically non-toxic to birds, but is toxic to fish. Eggs laid by pryriproxyfen-treated fleas within 70 hours after exposure are often devoid of yolk and frequently collapse after being deposited. Larval development is similarly arrested. Those fleas not killed outright by the action of the adulticide, will as a result, lay eggs that will fail to develop properly.
Application is from a little tube.
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