-12- 
rest or crawl on treated surfaces. Should be applied only by 
trainad personnel. May also be used to treat contents of pit 
latrines and to spray decomposing bodies and other organic 
material such as destroyed ration dumps* 
Insecticide, liquid, finished spray (l percent DDT, 2^- percent 
Thanite, in deodorized kerosene). For troop use spray di- 
rectly on the insects or into the air in which the insects are 
flying (mess halls, barracks, etc.). Has no residual effect. 
Insecticide, powder louse, 2-ounce ca n (10 percent DDT in pyrophyl- 
lite) * Issued to individuals for use in eradicating and pre- 
venting louse infestation by applying to inner surface of 
underclothing • 
Insecticide, powder, louse (10 percent DDT in pyrophyllite) . For 
use primarily in mass deleasing with power or hand dusters. 
May be used to control bedbugs, roaches, ants, and to treat 
habitats of fleas and mites • 
Insecticide, spray, de lousing (6 percent DDT, 68 percent benzyl, 
benzoate, 12 percent benzocaine, 14 percent Tween-80) • Must 
be diluted 1 to 5 with water just prior to use. Kills both 
adults and eggs of body, headland crab lice. Also an effec- 
tive scabicide. 
Larvicide, DDT, powder, dissolving (100 percent DOT, commercial 
grade) • For dissolving in oil or other approved solvents to 
form solutions up to 5 percent DDT, for use as larvioides, 
residual sprays, and airplane sprays* 
Larvicide, DDT, powder, dusting (10 percent DDT in talo) • For use 
as a mosquito larvicide after diluting to make a 2 percent 
DDT mixture. Also for use as fly larvicide and roach powder 
without dilution. May be applied to habitats of fleas and 
mites. 
The Crop Protection Institute during 1944 studied the relation of 
DDT to solvents and liquid carriers, and to various dry diluents. A 
large number of representative liquid carriers and more than 30 inert 
diluents for dust have been studied. From these investigations several 
formulations have been developed which are safe on plants and which 
permit DDT to perform to advantage.— 0' Kane ( 277 ) . 
DDT is not .in itself a complete insecticide, but is a toxicant which 
requires very careful compounding with other compatible substances to 
aot as diluents or carriers. — Anon. (9) • 
