Dengue fever is now ranked as the most deadly mosquito-borne viral illness in the world. In the Philippines, more than a hundred thousand contract the disease, resulting in hundreds and hundreds of deaths every year. What people don't know is that simple technology is available to prevent it. All it takes is clean water--plus brown sugar and yeast placed in a bottle. Producing carbon dioxide, the mixture attracts mosquitoes, trapping and killing them inside the bottle. Maynilad, a company that supplies clean water to the Phil. capital, distributed hundreds upon hundreds of these bottle mosquito traps to Filipinos.