After several other major African agricultural pest problems such as locusts and army-worms were reduced, rodents received more attention and are now considered major pests. 183 , 244 A high degree of social tolerance by Africans to this problem and the tendency of several rodent species to irrupt or dramatically increase their number has resulted in major economic losses. 51 Despite these losses, very little investigation of agricultural rodent problem has occurred, nor is there currently any major existing or proposed effort to deal with rodent pests in Africa. While agricultural problems have received little attention, research on rodent-borne diseases affecting humans has received higher priority.