This paper briefly summarizes the malathion work conducted at the USDA, ARS Mississippi State, MS location over the past 5 years. Aerially-applied malathion at rates of 4, 8, 10, 12, and 16 oz/acre were tested from 1995 through 1997 for their effectiveness on boll weevils. Dose-mortality data and rain-steadfastness data also were collected. Additionally, we conducted studies that established curves of malathion deposition and boll weevil mortality that could be expected on leaves sampled at various distances from the mistblower. In 1999 a significant relationship between malathion on the surface of bait sticks and boll weevil mortality was established.