Abstract: An insect killing system optimized for mosquitoes uses multiple thermal gradients to simulate the breathing of, and body heat emitted by, animals, including human beings and fowl, to attract insects for subsequent electrocution and/or trapping. Mosquitoes are attracted to a mosquito-killing device for electrocution and/or trapping. Heat is generated within the device such that a heat gradient between an outer surface of the device and the atmosphere surrounding the device is created thereby emulating emission of body heat by an animal. At least one mosquito attractant, such as an aromatic, a pheromone, or moisture, is emitted from the device. And an airflow is created that sucks mosquitoes, which have been attracted to the outside of the device, into the device for electrocution and/or trapping by the device.