The BG Sentinel traps attracts mosquitoes looking for a source for a blood meal through the use of CO2 from dry ice and a lure that emits an odor that simulates the presence of human skin. When a mosquito comes close to the trap, a battery powered fan sucks in and captures mosquitoes in a small net inside which is collected the following day. These traps are especially effective at capturing the invasive Aedes mosquito and are one of our primary means of surveillance for that particular mosquito.