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Deltamethrin is a pyrethroid ester insecticide. Deltamethrin plays a key role in controlling malaria vectors, and is used in the manufacture of long-lasting insecticidal mosquito nets ; however, resistance of mosquitos and bed bugs to deltamethrin has seen a widespread increase.
By 1974, the Rothamsted team had discovered a second generation of more persistent compounds notably: permethrin, cypermethrin and deltamethrin. They are substantially more resistant to degradation by light and air, thus making them suitable for use in agriculture, but they have significantly higher mammalian toxicities.
Permethrin is a medication and an insecticide. [6] [7] As a medication, it is used to treat scabies and lice. [8]It is applied to the skin as a cream or lotion. [6] As an insecticide, it can be sprayed onto outer clothing or mosquito nets to kill the insects that touch them.
Allethrin I (R = −CH 3) Allethrin II (R = −COOCH 3). The allethrins are a group of related synthetic compounds used in insecticides.They are classified as pyrethroids, i.e. synthetic versions of pyrethrin, a chemical with insecticidal properties found naturally in Chrysanthemum flowers.
Cypermethrin is moderately toxic through skin contact or ingestion. It may cause irritation to the skin and eyes. Symptoms of dermal exposure include numbness, tingling, itching, burning sensation, loss of bladder control, incoordination, seizures and possible death.
Environmental groups are calling for the removal of these pesticides from flea and tick treatment for dogs and cats.
Phenothrin, also called sumithrin and d-phenothrin, [2] is a synthetic pyrethroid that kills adult fleas and ticks.It has also been used to kill head lice in humans. d-Phenothrin is used as a component of aerosol insecticides for domestic use.
Chemical structure of permethrin, a common acaricide.. Acaricides are pesticides that kill members of the arachnid subclass Acari, which includes ticks and mites.Acaricides are used both in medicine and agriculture, although the desired selective toxicity differs between the two fields.
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