A new study has identified a scent receptor in mosquitoes that helps them sniff out and avoid trace amounts of pyrethrum, a plant extract used for centuries to repel biting insects. These findings ...

What these two scientists are independently trying to do with the plant in question, Chrysanthemum cinerariaefolium, commonly known as pyrethrum, is to eventually grow large enough quantities of this ...

After thousands of scientific tests and trials, pyrethrum has met or bettered government safety standards and it's currently considered safe for organic farming. But keeping the northern ...

Q: Please recommend a ready to use houseplant spray containing insecticidal soap or pyrethrin that you suggested using to get patio plants ready to move indoors. I have several large geraniums, doing ...

Ever since DDT came out of the laboratory two years ago, chemists have been trying to improve on the “wonder killer.” Last week a Britisher announced his entry: “Activated DDT,” a concoction of ...

IN my article published in NATURE of June 27 (p. 720) on “Biological Assay of Insecticidal Sprays”, it was stated that a solution of pyrocatechol in ether was recommended as a stabilizer for the ...

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