Mosquitoes can be trapped as part of a surveillance programme or as an intervention to reduce the number of mosquitoes in an environment. Mosquito traps typically have a form of attractant that lures mosquitoes to a capture or killing device.
Attractants can range from simple lamps that act as a light source, to plumes of carbon dioxide that mimic the exhalation of breath to attract blood-feeding insects looking for human hosts. Other traps release chemical odours such as 1-octen-3-ol and ammonia, attractants produced by humans to which mosquitoes respond.
The trap itself may be a capturing device that prevents escape, and such traps are useful both for mosquito control and to allow researchers to make collections for identification. Other traps have killing devices such as electrocution grids or sticky surfaces, similar to those used in fly traps.
A trap commonly used for surveillance and population reduction of Anopheles is the CDC Light Trap. The BG Sentinel trap is suitable for trapping Aedes mosquitoes, as it releases chemical attractants and therefore works during the day when a light trap would be less effective.