Not all mosquitoes are attracted to the same bait. Connelly suggests a low-tech "ovitrap," which uses standing water to lure Aedes albopictus and Aedes aegypti, two common breeds. First, cut off the top of a two-liter plastic bottle, and spray-paint the outside a solid black. Then drill two 3/8-inch overflow holes below the brim. Cover them, and the top, with fine mesh. Secure a wet cloth around the brim (soak it once a day) and fill the trap with water. Eggs, laid on the fabric, will hatch, fall through the mesh, and grow too large to escape.