Look out for these public enemies--mosquitoes--as they are after blood! Mosquito females need a meal of blood before they can lay their eggs. They target humans and animals and zoom in for a feast. But these insects may do more harm than causing itchy welts. Mosquitoes can also pass along a number of serious and deadly diseases to those they bite. Humans have developed a number of ways to get rid of mosquitoes, from spreading chemicals to putting...