Recent Examples of pyrethroid from the Web
Bifenthrin (a pyrethroid): Talstar; Bifenthrin, Ortho Home Defense and other brands.
Residential services typically use insecticides registered with the Environmental Protection Agency, like pyrethrins, derived from chrysanthemum flowers; and pyrethroids, synthetic chemicals that mimic pyrethrins.
Pyrethroids can be toxic to bees and fish, the E.P.A. says, so treatments should avoid decorative ponds.
When pyrethroids were introduced into Israel in the early 1990s, just one treatment would destroy all the adult lice on an individual within a few weeks.
The situation is totally different in Europe, where treatment moved on from pyrethroids and virtually all insecticides about a decade ago, says Ian Burgess, president of the International Society of Phthirapterists (people who study lice).
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Origin and Etymology of pyrethroid
First Known Use: 1949See Words from the same year
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