Carbon dioxide (CO₂) sources improve the efficacy of mosquito traps. However, traditional CO₂ sources (dry ice or compressed gas) may be difficult to acquire for vector surveillance during military contingency operations. For this reason, a new and convenient source of CO₂ is required. Two novel CO₂ generators were evaluated in order to address this capability gap: 1) an electrolyzer that converts solid oxalic acid into CO₂ gas, and 2) CO₂ produced by yeast as it metabolizes sugar. The flow rate and CO₂ concentration produced by each generator were measured, and each generator's ability to attract mosquitoes to BG-Sentinel™ traps during day surveillance and to Centers for Disease Control and Prevention light traps with incandescent bulbs during night surveillance was compared to dry ice and compressed gas in Jacksonville, FL. The electrolyzed oxalic acid only slightly increased the number of mosquitoes captured compared to unbaited traps. Based on the modest increase in mosquito collection for traps paired with the oxalic acid, it is not a suitable stand-in for either of the 2 traditional CO₂ sources. Conversely, the yeast-generated CO₂ resulted in collections with mosquito abundance and species richness more closely resembling those of the traditional CO₂ sources, despite achieving a lower CO₂ flow rate. Therefore, if dry ice or compressed gas cannot be acquired for vector surveillance, yeast-generated CO₂ can significantly improve trap capability.