Word: ddt
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...entomologists last week made a preliminary report on another sensational British insect killer, Gammexane, claimed to be five times as deadly as DDT (TIME, May 28, 1945). It has an unpleasant naphthalene smell, lacks DDT's lasting effect. It is particularly potent against cockroaches, proved effective in checking a locust plague in Sardinia this spring, and has shown promise against the cotton boll weevil. But in the sunny U.S. climate it has been generally less lethal than in foggy Britain...
...mixture of quick "knockdown" pyrethrum and DDT has been used in many preparations, notably the U.S. Army's "aerosol" insect bombs, now being sold to U.S. householders. But Activated DDT is supposed to penetrate an insect's chitin (outer skin) and reach its nervous system more surely than previous mixtures...
Some commercial DDT preparations available to U.S. householders and gardeners have proved 1) disappointingly feeble, 2) harmful to plants and animals. But the U.S. Department of Agriculture last week declared that DDT, properly used, is still the best insecticide. To help citizens prepare for their annual battle with the bugs, the Department gave out some advice...
...flies, mosquitoes, bedbugs, roaches: Use a 5% DDT solution in kerosene, painted or sprayed on screens, walls, mattresses, under sinks, shelves. It is good up to six months but a fire hazard when first applied. Aerosol bombs are less effective than painting; although they kill all insects in sight, they leave no lasting deposit...
...dogs' fleas, ticks, lice: Dust with a 10% DDT powder-but don't use it on cats, because they lick off the dust. DDT solutions are dangerous to animals...