Abstract The successes of boll weevil eradication within the United States has been due in a large part to the ability to monitoring populations by use of boll weevil (Anthonomus grandis grandis Boheman) traps baited with grandlure. An impedance to trap detection of boll weevils is the predation of boll weevils by other arthropods once the boll weevil is caught in the trap, or by webbing from spiders which blocks the entrance of the trap and renders the trap useless. We surveyed the arthropods that are responsible for interfering with boll weevil trap captures and evaluated grandlure combined with an insecticide (CombolureŽ) dispenser versus the insecticide and grandlure in separate dispensers. Ninety eight percent of all arthropods caught in boll weevil traps came from thirteen different spider families representing fourteen known species, and fifteen identified to genus. The more common spider families were Anyphaenidae, Araneidae, Lycosidae, and Tetragnathidae. The combination lure/insecticide (ComboLureŽ) worked as well as the lure and insecticide presented in separated dispensers in attracting boll weevils. These two treatments were not significant from one another in causing mortality to captured weevils and other arthropods caught in the trap, and both caused significantly more mortality than a grandlure dispenser in the absence of insecticide DDVP.