This study was conducted in Experimental Field of Agriculture Collage during 2002 – 2003 in order to test the efficacy of some insecticides in controlling onion thrips T. Tabaci. Seven pesticides and control were randomly distributed on 24 experimental blocks (8 ´ 3 m) cultivated with garlic. Furadan 5G (Carbofyran 5%) mixed with soil before cultivation. Other pesticides: Pegasus 250 SC (Diafenthiuron 250 g/L), Selecron 320 EC (Brofenofos 320 g/L), Deices 50 EC (Deltamethrin 50 g/L), Decis plus mineral summer oil, mineral summer oil and Confidor 70 WG (Imidocloprid 70%) had been sprayed twice.