Kill mosquitos with no effort

So you don't like those pesky mosquitoes, especially now that they have the potential to carry the West Nile Virus? Here's a tip that was given at a recent gardening forum. Put some water in a white dinner plate and add a couple drops of Lemon Fresh Joy dish detergent. Set the dish on your porch, patio, or other outdoor area. Not sure what attracts them, the lemon smell, the white plate color, or what, but mosquitoes flock to it, and drop dead shortly after drinking the Lemon Fresh Joy/water mixture, and usually within about 10 feet of the plate. Check this out---it works just super!