House Fly Control in Pig Parlors

Abstract
White 16-ply cotton cords were soaked in 12% ronnel, 25% Diazinon® (O,O-diethyl O-(2-isopropyl-4-methyl-6 pyrimidinyl) phosphorothioate) and 25% Bayer 29493 (O,O-dimethyl O-(4- methylthio-m-tolyl) phosphorothioate) emulsifiable concentrates, allowed to dry, and hung from the ceiling or rafters in pig parlors. Sufficient 18-inch drops were used to provide 28.5 feet of vertical cord per 100 sq. ft. of floor space. House fly (Musca domestica L.) densities were determined immediately prior to and at weekly intervals following cord placement. Satisfactory control was being obtained with all materials in the test after 10 weeks.

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