Fenoxycarb is an insect growth regulator. It has a low toxicity for bees, birds, and humans, but is toxic to fish. The oral LD<sub>50</sub> for rats is greater than .
Fenoxycarb is non-neurotoxic and does not have the same mode of action as other carbamate insecticides. Instead, it prevents immature insects from reaching maturity by mimicking juvenile hormone (IRAC group 7B).