A CDC light trap baited with oviposition attractants effectively collected gravid Culex mosquitoes. Addition of isopropyl alcohol enhanced the effectiveness of hay infusion to attract gravid Culex. Paired tests indicated that the hay infusion + alcohol-baited CDC light trap collected fewer Culex but significantly more gravid Culex than the CO2-baited CDC light trap. The hay infusion + alcohol-baited trap also collected a significantly higher percentage of parous Culex The hay infusion + alcohol mixture appears to be a valuable supplement to CDC light traps and has potential as an arbovirus surveillance tool.