CO2 mosquito traps imitate human breathing releasing carbon dioxide. Mosquitoes feel it at the distance of dozens meters, and take it for the sign of human vital activity. This kind of trap pull the attracted insects into a net, or a receiving container. But where is the gas in the device taken from? There are two ways. The most common one is the supply of CO2 from a special balloon. There traps are used only outside  and we have collected the best of them in our complete review!