Dow ET-57 as a Fly Larvicide1

Abstract
Field comparisons of Dow ET-57 and malathion for determination of larvicidal efficiency against house flies and other types of Diptera under caged laying hens were made, using surface application of 1 1/4% solutions. Dow ET-57 gave an overall control of 78 to 99% at the end of the 1st and 2d week, respectively, while malathion gave a corresponding 0 to 67% control.

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