Leaching studies of bifenthrin in two different soils were carried out under laboratory conditions during October- November 2011.Commercial formulation of bifenthrin available as Talstar 10 % EC were applied at two treatment levels i.e. 25 and 50 μg as single and double dose, respectively. More than 90 per cent of bifenthrin were retained in 5 cm soil section in sandy loam and clay loam soil which shows the immobility of this pyrethroid insecticide in soil. No residues were detected in the leachate fractions of the insecticide.