Sales of mothballs have soared following the first suspected death from a killer tick virus last week, Lotte Mart Co. said Tuesday, amid fears that the deadly disease may have spread to the nation from neighboring countries. Lotte Mart, the nation\'s third largest discount chain, said its mothball sales surged 30.8 percent between Wednesday and Sunday, with the sales of anti-flea mothballs more than doubling in the same period.