This study was carried out to evaluate efficiency sticky traps on attraction Bemisia tabaci (Gennadius) on squash plants Cucurbita pepo L. (three squash varieties i.e. Arkan, Sama 740 and Andro 174) under greenhouse conditions at  Perkash (Giza governorate)  during 2017, 2018 seasons. This study contains three experiments, The first experiment aimed to evaluate the efficiency color of the sticky trap on attraction B. tabaci through comparison between four colors (yellow, blue, red and white). This experiment was carried out on squash plants during the period (February - March). Results showed that the traps which have yellow color more efficiency than others which have (blue, red, and white) color, respectively. The second experiment aimed to evaluate the efficiency height of the yellow sticky trap on attraction B. tabaci through comparison between four heights (2m, 1.5m, 1m and 0.5m) above the ground. And this experiment was carried out on squash plants during the period (April - May). Results showed that the trap which has 2m height above the ground more efficiency than others which have (1.5m, 1m and 0.5m) heights, respectively. The third experiment aimed to evaluation efficiency orientation of the yellow sticky trap on attraction B. tabaci through comparison between four orientations (North, South, East and West). And this experiment was carried out on squash plants during the period (June - July). Results showed that had no clear effect of the trap orientation on attraction B. tabaci.