Two students have invented a soap they say repels mosquitoes . In many of these countries , apart from its high toll on human life , malaria also exacts a heavy burden on their economies . ` ` ' Soap '' was the winner of this year 's National Social Science Competition . One student is from Burkina Faso , the other from Burundi . The soap is made from clarified butter and other secret ingredients .
Two students have invented a soap they say repels mosquitoes . ` ` ' Soap '' was the winner of this year 's National Social Science Competition . One student is from Burkina Faso , the other from Burundi . The soap is made from clarified butter and other secret ingredients .