Paul Harvey says the Mosquito Magnet will keep your whole yard mosquito free. My yard is 5+ acres and I'm less that mile from the S. Platte River. I'd say the odds are low of it helping but the Platte River Valley has the highest # of cases of West Nile as far as I know, in the whole country, and the very young and very old are most often killed. My 1 yr. old son wishes I would do something. Any of you have one?????