pyrethrin


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Related to pyrethrin: permethrin

pyrethrin

/py·reth·rin/ (pi-reth´rin) either of two esters, p. I and p. II, found in the flowers of certain species of Chrysanthemum; used as an insecticide and as a topical pediculicide.

pyrethrin

Public health A topical insecticide used to manage head lice. See Head lice.
References in periodicals archive ?
A Review of the Relationship Between Pyrethrins, Pyrethroid Exposure and Asthma and Allergies.
Pyrethroids are synthetic chemical insecticides that act like pyrethrins.
The seven other chairs were removed from the library, placed on the library's loading dock, treated with pyrethrin and wrapped in plastic, she said.
The synthetic pyrethroids and their natural pyrethrins can be divided into two groups based on their chemical structures and mechanism of action on insect target sites.
Chemicals currently used around the world to treat stored grain include chlorpyrifos methyl, lindane, malathion, piperonyl butoxide plus pyrethrins [10].
Therefore, the focus of this work is to observe and report changes in the hematological parameters and tissues of amphibians exposed to graded doses of lambda cyhalothrin, a synthetic pyrethrin.
Selected trees were treated with a broad spectrum, synthetic, pyrethrin insecticide (30 ml of Asana XL, 0.
The recommended treatment is pyrethrin, used when leaves first show damage.
Because a vast number of tick control products are available, with some of them containing dangerous pesticides, including pyrethrin (pyrethroid), organophosphate insecticides and carbamates, Dr.
A highlight of this trip was a visit to a site of undisturbed forest, where we observed Leston and his Ghanaian assistants use pyrethrin mist to capture insects from the canopy.
Americans, it turned out, increased their use of pyrethroid and pyrethrin insecticides after the EPA had cracked down on organophosphate pesticides such as Dursban.