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2776788 
Technical Report 
Repellents and impregnants for the control of body lice 
Eldridge, BF 
1973 
PESTAB/75/0186 
Health Organ 
177-178 
PESTAB. Advantages in using repellents and impregnants over the use of toxicant powders, fumigants, or steam sterilization for louse control include the fact that impregnants can be incorporated into clothing or bedding by the manufacturer or at large-volume laundries. Materials so impregnated may remain effective through several washings. The wearer of such clothing may not even notice the presence of an antilouse agent, and this method should be cheaper than other forms of control. Lindane (a 0. 3% solution) is effective in this respect, but does not remain so after a second washing. Three insect replellents are stocked in the U. S. military supply system for use on clothing. M-1960 (30% 2-butyl-2-ethyl-1,3-propanediol, 30% benzyl benzoate, 30% n-butylacetanilide and 10% Tween 80) is a general purpose repellent. A combination of 75% N,N-diethyl-m-toluamide (deet) and 25% ethanol is used against arthropods that spend significant amounts of time off the human host. The third, 90% benzyl benzoate, is particularly effective against chiggers. The use of body belts impregnated with a thiocyanate compound for body louse control has thus far seemed fairly effective.