Deltamethrin is a synthetic pyrethroid pesticide that kills insects through dermal contact and digestion. It is applied for a range of commercial crops and recreational uses, and by extension controls a variety of pests. It was first synthesized in 1974, and since has been used primarily on cotton, coffee, maize, cereals, fruits, and stored products; however, deltamethrin is also applied in animal health and public health capacities.
Deltamethrin is considered the most powerful and therefore the most toxic of the pyrethroids, up to three orders of magnitude more so than some. In studies done on workers in agricultural settings, deltamethrin can produce a variety of acute health conditions, but these can be prevented with necessary precautions. The chemical also carries several ecological risks, particularly by causing algal blooms and reducing bee populations and their associated pollination service.


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