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Does aerial spraying really protect us
from EEE or West Nile Virus?

Spraying reduces the adult mosquito population for only a week or two.
The efficacy of Anvil is limited, since it only kills adult mosquitoes that come into contact with the chemical, and does not kill the larvae at all.  The best case scenario would result in a 50-80 percent reduction in the adult mosquito population for only a short period of time. Since Anvil does not affect the developing larvae, mosquito populations can return to pre-spraying levels within a week or two. 

Spraying of adult mosquitoes is perhaps the most ineffective way to prevent spread of EEE and other mosquito-borne illnesses.   Pyrethroids are also indiscriminate in what they kill, and therefore they affect other insects and animals that come into contact with the droplets.  The poison drifts when it is sprayed, and therefore the pesticide ends up in places where it was not intended to go. 

Spraying may spread EEE to a wider area.
Moreover, because the aerial spraying kills many of the insects that birds depend on for food, birds who may be carriers for EEE or West Nile virus, may leave the immediate vicinity in search of food.  This may result in actually spreading the EEE virus into areas previously unaffected, by forcing birds, the vector of the virus, into other habitats. 
Spraying kills fish, tadpoles, and beneficial insects.
Aerial spraying will also kill animals and insects other than mosquitoes.

The label on Anvil states “This product is toxic to fish. For terrestrial uses, do not apply directly to water, or to areas where surface water is present or to inter tidal areas below the mean high water mark.”

Anvil is not only toxic to fish, but to tadpoles and beneficial insects such as honeybees, and the insects that are themselves mosquito predators.  While Anvil may degrade within one to several days if exposed to direct sunlight, pesticide residue in shady areas can last much longer.  In some instances, it can remain in the soil for up to 16 weeks

Insect pests can become resistant to pyrethroids.
Insects reproduce and mutate quickly, which has resulted in a number of insects that are highly resistant to pyrethroids.  Cockroaches, head lice, tobacco budworm, and the house fly have all become resistant to pyrethroids.  It is likely that mosquitoes carrying EEE can also become resistant to pyrethroids. 






wood frog

Spraying kills fish, tadpoles, and beneficial insects.