Nine insecticide baits and a control were evaluated for efficacy against darkling beetles, Blapstinus spp., in cantaloupe at Holtville, CA. Randomized complete block design field plots, with four replicates, measured 15.25m X 8.13m. Insecticide baits were applied at 2 week intervals in May and June. Baits included 2-Gowan Co. products, 5% carbaryl bran bait and 0.5% permethrin grape pumis bait; 2-Wilber Ellis Co. products, 5% carbaryl bran pellets and 5% carbaryl bran crumbles; 2-DuPont products; 0.22% indoxacarb corn grit granules and 0.045% indoxacarb corn grit granules; and 4 baits formulated by USDA-ARS-NCAUR consisting of pre-gelatinized corn flour granules with 20% montmorillonite clay and cantaloupe rind juice baits with 5% carbaryl, 1% imidacloprid, 5% spinosad, or no insecticide, respectively. Beetle populations in field plots were evaluated via 2 methods. First, numbers of beetles beneath 20 melons per plot were recorded. Second, beetles beneath 10 potato slices, 6.35mm thick, per plot were recorded after12h. Laboratory experiments consisted of choice tests, evaluating attractiveness, and no-choice tests evaluating toxicity. Beetle counts in the field experiment were consistently lower in 0.5% permethrin grape pumice baited plots. In the no-choice laboratory experiment, the 0.5% permethrin grape pumice bait treatment had the most rapid knock-down and highest mortality, followed by 5% carbaryl bran bait. In the choice tests, 0.5% permethrin grape pumice bait was among the most attractive. A comparison of the 4 formulations of pre-gelatinized corn flour granules, showed that bait with no insecticide was more attractive than insecticide formulations.