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Neocid Barn Spray is a finely ground wettable powder containing 20 
percent of DDT and a suitable quantity of a spreading and sticking agent. 
It nay be used either as a residual-type spray against flies and adult 
mosquitoes or as a dip against cattle and goat lice and sheep ticks. -- 
Geigy Co. (171 ). 
Neocid A-10 Powder is a finely ground dusting powder containing 10 
percent of DDT. It is designed for use without further dilution in the 
control of roaches, fleas, carpet beetles, bedbugs and other insects 
affecting man, poultry, and livestock.— Geigy Co. (170 ) . 
Gesarol Dust Concentrate contains 40 percent of DDT and is design- 
ed for dilution in ordinary dust-mixing equipment without additional 
grinding. Recommended diluents in the order of preference are (l) non- 
fibrous talcs of good dusting quality, (2) pyrophyllites of dusting 
grade, and (3) dusting clays, diatomaceous earths, oalcium carbonate or 
chalk, gypsum, and fibrous talcs. Do not use hydrated lime, bentonites, 
or fuller's earth as diluents in the preparation of Gesarol dusts, as 
they seriously reduce the efficiency of the product. Certain organic 
fillers, such as walnut-shell flour, have a similar, though less serious, 
effect and are therefore not recommended .--Geigy Co. (169) . 
Unmodified 13DT is not in suitable form for the consumer. The Array 
and Navy have about six products made to their specifications. DDT will 
be used in the form of dusts, solutions, aqueous suspensions, emulsions, 
and aerosols. For the conventional household fly spray, the recommenda- 
tion is the addition of 0.2 percent of DDT with whatever reduction in 
present aotive ingredient can be tolerated to provide knock-down, sinoe 
even this small quantity of DDT will give "kill.** IDT formulations, which 
may be of many compositions and strengths, must be tried and proved to 
establish proper claims.-- Jeneman (226 ) . 
Among the DDT insecticides authorized for supply by the U. S. War 
Department (25, 358 ) June 1945 were the following: 
Insecticide, aerosol, 1-pound dispenser (3 percent DDT, 2 percent 
pyrethrum extract containing 20 percent pyrethrins, 5 percent 
cyclohexanone, 5 percent hydrocarbon oil and 85 percent Freon-12) • 
The aerosol bombs are an olive-drab color affording easy 
differentiation from the black dispensers previously issued 
which contained pyrethrum, sesame oil, and Freon-12. 
Insecticide, DDT emulsion concentrate (25 percent DDT, 10 percent 
emulsifier, 65 percent xylene) . Stock mixture for making a 
2-percent DDT emulsion to be used primarily in louseproofing 
clothing and to a limited extent for larvicidinp purposes. 
Insecticide, spray D7YT, residual effect (5 percent DDT, 15 percent 
solvent, and 80 percent kerosene) . For use in killing flies, 
mosquitoes, roaches, bedbugs, ants, and other insects that 
