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2. Bifenthrin - Wikipedia

   en.wikipedia.org/wiki/Bifenthrin

   Like other pyrethroids, bifenthrin is chiral; it has different enantiomers which can have different effects. Bifenthrin is found in two enantiomers: 1S-cis-bifenthrin and 1R-cis-bifenthrin. 1S-cis-Bifenthrin is 3-4 times more toxic to humans than 1R-cis-bifenthrin, while the latter is more than 300 times more effective as a pesticide. [2]

3. Pyrethroid - Wikipedia

   en.wikipedia.org/wiki/Pyrethroid

   Pyrethroid absorption can happen via skin, inhalation or ingestion. [11] Pyrethroids often do not bind efficiently to mammalian sodium channels. [12] They also absorb poorly via skin and human liver is often able to metabolize them relatively efficiently. Pyrethroids are thus much less toxic to humans than to insects. [13]

4. Pesticide toxicity to bees - Wikipedia

   en.wikipedia.org/wiki/Pesticide_toxicity_to_bees

   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

5. Pyrethrin - Wikipedia

   en.wikipedia.org/wiki/Pyrethrin

   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 ...

6. Allethrins - Wikipedia

   en.wikipedia.org/wiki/Allethrins

   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.

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