Word: aerosoles
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...famous "bug bombs" (aerosol sprays) are excellent for a limited purpose. They should contain both DDT and pyrethrum (or some similar toxicant). The pyrethrum knocks flies and mosquitoes down quickly. The slower DDT keeps them from rising again. But bug bombs leave no appreciable residue. Bugs that arrive in the room after the air has cleared remain in good health...
Besides DDT, three other highly effective weapons have been developed for the Army & Navy: 1) an insect "bomb," consisting of a small can which, when opened, releases an "aerosol" gas loaded with an insecticide (such as DDT or quick-killing pyrethrum) that instantly fills a room; 2) a new mosquito repellent, "Formula 6-12," which smells like witch hazel and is reported to be six times as effective as 100% citronella; 3) N.M.R.I. 201, a still more effective repellent just developed by the Navy, said to last eleven hours...
...condition with Freon, but use it to keep precision tools at a constant temperature. Because of its safety, the U.S. Navy and Maritime Commission use it exclusively on ships and submarines. Then last May the Surgeon General's office showed up with a malarial mosquito-killer called an aerosol, publicized as the "mosquito bomb." The "Mosquito Bomb" is a spray gun holding about one pound of insecticide...
...hunter" pulls a trigger, releases a high-pressure charge which saturates the air of tent, hut, or dugout with a quick insect-killing mixture of sesame oil and extract of pyrethrum flowers, vaporized by Freon. Aerosol, says the Army, tracks down mosquitoes to the last, remote fold of clothing and tent. Chief producer of aerosol is Westinghouse. But Freon is still the essential spreading agent of aerosol...
...discovery was accidental. Dr. Robertson and his colleagues were trying out another possible germicide-a detergent or "soapless soap" (similar to Dreft, Aerosol and other products widely sold for household and industrial use). Water solutions of the detergent were only mildly effective, so the researchers tried solutions of detergents in propylene glycol, which is a sort of thin glycerine. Results were much better. Then the researchers found that the propylene glycol itself was a potent germicide. One part of glycol in 2,000,000 parts of air would-within a few seconds-kill concentrations of air-suspended pneumococci, streptococci...