Are mosquito traps that use CO2 and/or octenol effective in controlling mosquitoes or preventing mosquito bites?

The arrival of West Nile virus in Colorado has increased interest in mosquito management around the home and on small acreages, and in personal protection from mosquito bites.

The fact sheet 5.526, Mosquito Management covers the basics of controlling mosquitoes around the home and of personal protection options. The following is intended to provide more detail on mosquito repellents, mosquito control devices, larvicides (insecticides targeted at mosquito larvae), and adulticides (insecticides targeted at mosquito adults).

Mosquito Control Devices – Mosquito Traps
Attract and kill devices become more effective as CO2 and octenol attractants are added. Also, efficacy is strongly influenced by the manner in which the attractants are dispersed from the trap. The most effective of these traps has been shown to be as effective as deet in a contained environment (large outdoor tent) with a known number of mosquitoes. Read more at http://www.ext.colostate.edu/westnile/mosquito_mgt.html