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A pyrethroid is an organic compound similar to the natural pyrethrins, which are produced by the flowers of pyrethrums (Chrysanthemum cinerariaefolium and C. coccineum). Pyrethroids are used as commercial and household insecticides. [1] In household concentrations pyrethroids are generally harmless to humans. [1]
Pyrethrins and Pyrethroids Fact Sheet - National Pesticide Information Center; Pyrethrins and pyrethroids on the EXTOXNET; Pyrethrin and Permethrin Toxicity in Dogs and Cats; Wagner, S. L. (2000). "Fatal asthma in a child after use of an animal shampoo containing pyrethrin". The Western Journal of Medicine. 173 (2): 86–7. doi:10.1136/ewjm.173 ...
Permethrin is a medication and an insecticide. [4][5] As a medication, it is used to treat scabies and lice. [6] It is applied to the skin as a cream or lotion. [4] As an insecticide, it can be sprayed onto outer clothing or mosquito nets to kill the insects that touch them. [5][7] Side effects include rash and irritation at the area of use. [6]
Pyrethroids are synthetic insecticides based on natural pyrethrum ; one common example is permethrin. Pyrethrins are often sold in preparations that also contain the synthetic chemical piperonyl butoxide , which enhances the toxicity to insects and is faster acting compared with pyrethrins used alone.
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. They were first synthesized in the United States by Milton S. Schechter in 1949.
Permethrin [54] Ambush, Pounce Pyrethroid: 1 – 2 days Safened by repellency under arid conditions. Permethrin is also the active ingredient in insecticides used against the Small hive beetle, which is a parasite of the beehive in the temperate climate regions. Highly toxic Cypermethrin [55] Ammo, Demon, Raid, Viper Pyrethroid: Less than 2 hours
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