What effects does pyrethrin have on wildlife?
pyrethrin used in mosquito control programs does not pose unreasonable risks to wildlife or the environment. pyrethrin degrades rapidly in the environment and it displays low toxicity to birds and mammals. Acute and chronic toxicity to fish is not expected based on the low application rate used for mosquito control. EPA has established specific precautions on the label to reduce the risk to aquatic invertebrates for repeated use of pyrethrin. Pyrethrin is considered toxic to bees. However, spraying operations are likely to be conducted when bees are not foraging thus minimizing the potential for exposure.
