Boll weevil remains a significant cotton pest in many cotton production regions, and aerial applications of malathion are a significant control measure in boll weevil eradication programs. Aerial electrostatic spray systems offer possibility of increased spray deposits and reduced drift of water-based low volume sprays. A field study was conducted to compare electrostatically applied EC malathion to ULV malathion for spray deposits, weevil mortality, and fruit damage. Electrostatic applications gave higher weevil mortality on the day of application but persistence of the water-based electrostatic spray was lower than the oil-based ULV spray, which resulted in higher fruit damage for the electrostatic spray application.