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Field tests with free-flying house flies and mosquitoes in passenger aircraft that were being used on routine schedules have shown that lindane residues of 200 mg. per sq. ft. will satisfactorily disinsect baggage compartments for five weeks with a single application. These dosages are objectionable in passenger cabins because of spotting, but lindane residues of 50 and 70 mg. per sq. ft. are not objectionable in this respect and these were effective in the cabins for one and three weeks, respectively. DDT and dieldrin residues applied at reasonable dosages were found to be inferior to lindane deposits for aircraft disinsectization.
Further studies on application methods for lindane and on the toxic hazards to passengers and crews of the vapors from lindane residues must precede general use of this method for aircraft disinsectization.
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