Answer
Juvenile hormone would not be immediately lethal as an insecticide, instead working to prevent reproduction by stopping metamorphosis, preventing growth of insect populations. It could conceivably be lethal if an insect could be killed by staying in one stage of development for too long.
Work Step by Step
See that juvenile hormone has no role (Fig. 45.16) which would allow it to kill an insect. It merely helps control stages of development.
