This has been discussed extensively in the past.

You might want to look at these thread:
http://www.poolforum.com/pf2/showthr...osquito-Magnet
http://www.poolforum.com/pf2/showthr...ling-Mosquitos
http://www.poolforum.com/pf2/showthr...osquito-fogger
You can find more, by searching on this page:
http://www.poolsolutions.com/search.html
Ben