The ovicidal value of concentrated vapors of chloroform, suL- 

 furoTis acid, ammonium sulfide, ethel dixanthogen, BIE. forralin, 

 and phenol hsis been reported (Enigk and Grittner 1953). 



A report of the resistance of 0, moubata to various sheep dips 

 (Blacklock 1912) is of little contemporary interest. 



Disinfection of Personal Effects 



Blankets, bedding, and clothing may be disinfected by ex- 

 posure in a tight container to a temperature of 82°C . for half 

 an hour (Hopkins and Chorley 19^0). 



Burning 



In a carefxxlly conducted experiment, Garnham (1926) found, 

 contrury to certain textbook statements, that burning of African 

 huts infested with 0. moubata is an effective means of killing 

 these ticks. He suggested pulling down the straw roofing and 

 piling it inside mud hut walls for biirning. This may be the 

 only means of control where the indigenous population does not 

 work for pecuniary gain. Otherwise burning is uneconomical un- 

 less the situation is serious. More permanent housing, in which 

 infestation may be controlled or better still prevented, should 

 be substituted whenever possible. Burning infested bviildings has 

 long been the indicated control method in many parts of Africa, 

 Flame throwers are sometimes used to good effect where ticks are 

 lodged in shallow cracks in buildings that withstand fire. Jack 

 (1931) obtained control against tampans in nine-inch walls of 

 pigsties by biirning brushwood on both sides of them. Burning 

 against only one side and spraying with a ten percent emulsion 

 of paraffin (i.e. kerosene) had failed. 



Hand-picking 



A reward of sixpence for every twenty ticks collected on a 

 South African farm yielded 73,000 ticks oneyear and over half a 

 million in several years. Laborers placed a thin layer of drift 

 manure along the inside walls of their huts and there collected 

 the ticks as they came to hide. Small holes dug inside and out- 

 side the doors and filled with drift manure were also found to 

 be favorite hiding places (Annecke and Quin 1952), 



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