AdultSitophilus oryzae(L.) in wheat contaminated withSalmonella montevideoHormaeche&Peluffo (l07cells/g) were released at 1 end of a cylindrical metal chamber, 311.25×7.5 cm, filled with uncontaminated wheat.S. montevideo-positive wheat samples were recovered as far from the infestation point as 270 cm.S. montevideonumbers ranged from 0.92 to 1.60/g at 30 cm and from 0.0 to 0.004/g at 270 cm from the infestation point.