The Effectiveness of Ronnel as a Cord Impregnant for House Fly Control

Abstract
In Chatham County, Georgia, tests with cotton cords (3/32" diameter) impregnated with Ronnel Dow ET-57) provided 10 to 16 weeks of satisfactory to excellent house fly control in 9 of the 10 dairies studied. Ronnel is the first organophosphorus compound of low mammalian toxicity to be effective as a cord impregnant. The results compare favorably with those obtained previously with parathion or Diazinon (O O-diethyl O-(2-isopropyl-4-methyl-6-pyrimidinyl) phosphorothioate) treated cords.

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