Cyanogas Calcium Cyanide For Housefly Fumigation In Certain Types of Building

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Hydrocyanic acid gas derived from Cyanogas calcium cyanide has proven an effective and economical fumigant for houseflies at Clemson College, S. C., during the past season, especially in large rooms such as dairy barns, stores, shops, labora- tories and under certain conditions in homes. The calcium cyanide was usually applied as a dust cloud thrown vigorously and horizontally from a cupped stiff paper held in the hand. In homes, feed rooms for animals and in other rooms where a dust cloud could not be used or where it was not advisable to have the dust fall to the floor, the calcium cyanide was applied as a thin film on papers placed in several parts of the room. The normal dosage used in commercial control ranged around 1/2 ounce per 1000 cubic feet, being slightly less in large rooms with very little leakage and more as the leakage increased, the increase being greatest in the smaller rooms. Night fumigations were more convenient and were usually more effective. The evolution of the gas from the dust clouds was slow enough to allow sufficient time for a thorough application, and the concentration of hydrocyanic acid gas necessary for a lethal dosage for flies is low enough to allow a considerable margin of safety for the operator.

Document Type: Research Article

Publication date: April 1, 1927

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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