100 DDT — ^Killer of Killers 



usually longer, for the new-born creatures to become sexually- 

 mature adults. 



Those who are in a hurry to get rid of the eggs as well 

 as the lice can make use of the NBIN formula, which was de- 

 veloped during the war particularly for the control of the 

 body louse, but which is equally effective against the head 

 and crab lice. This material is applied in emulsion form, 

 one part of concentrate to five parts of water. The hair is 

 thoroughly wetted with the emulsion, and is then combed to 

 insure a more thorough distribution. Although the eggs as 

 well as the lice themselves are killed by a single treatment, 

 it is a good idea to leave the material on the hair for 8 or 10 

 days in order to be sure that you get any lice that may have 

 been hiding in your clothing while you were treating your 

 hair. Since this material will retain its killing properties for" 

 at least two weeks after application, any stray lice that re- 

 turn to their home will wish they hadn't. 



You probably will not be interested in mixing up some 

 NBIN, but your druggist or your chemist friend can do it for 

 you, for NBIN concentrate is merely a mixture of 68 parts 

 of benzyl benzoate, 12 parts of benzocaine, 6 parts of DDT, 

 and 14 parts of a dispersing agent, such as Tween 80. 



Right Where If Hurts 



The crab, or pubic, louse is not known to transmit dis- 

 ease, but he can sure make you miserable. He seems to know 

 that scratching, particularly around certain parts of the hu- 

 man body, is frowned upon in good society. Therefore, he 

 makes his home principally in the pubic region where he can 

 bite those tender parts to his heart's content, knowing that 

 you will do no more than merely squirm in your chair. 



