The paper analyzes combined data from 5 fleahopper control experiments conducted on Texas Coastal Bend cotton in 1993, 1995, 1998 and 1999. Measurements included impact of insecticides on fleahopper and beneficial predator numbers, evaluation of cotton fiber characteristics, effects of fleahopper control on boll numbers, and effect of treatments on lint production. Although numerous insecticides were evaluated in individual experiments, three insecticides (Orthene, Provado, Bidrin) included in all 5 tests were chosen for presentation in this report. These insecticides are commonly used for fleahopper and/or aphid control. Insecticides significantly reduced fleahopper numbers (season averages) during the critical plant growth stage (pinhead square until first bloom). Insecticides had a short term, adverse impact on beneficial predators in the small plots utilized in these studies. No effects were observed on cotton fiber characteristics. Harvested boll numbers were numerically increased in insecticide treated cotton and the number of bolls required to produce a lb of lint were numerically lower in all, and significantly lower in 2 of the 3 insecticide treatments. Lint yields were significantly increased (77.3 lb/acre average) in insecticide treated cotton over the 4-year period. Dollar returns over costs were $17.35 (Orthene), $7.21 (Provado) and $21.14 (Bidrin) when compared to untreated cotton.