The present invention discloses trapping devices for biting (e.g. mosquitoes, sand flies, black flies, and biting midges) and nuisance flies (e.g. houseflies, filth flies, and fruit flies). The outdoor solution for biting flies includes a solar panel, a housing, a bag, and a ventilator located in the housing. The ventilator creates a capture zone having an airflow toward the bag. A CO2 generator, chemical attractants, a heat source, and a UV light attract mosquitoes to the capture zone. The chemical attractants are released continuously, the CO2 is released in pulses, and the ventilator and UV are operated in independent programmable intervals. The device is efficient in energy consumption and CO2 production. Other trapping devices are disclosed having a combination of insect-attracting mechanisms including a ventilator. Novel insect zappers including a ventilator are disclosed as well. Indoor and outdoor solutions for insects including biting and nuisance flies.