Chiggers are types of mites who feed on the blood of humans, birds, mammals, amphibians and reptile while in the larva stage of development. Once an area is infected with chiggers, you can't get rid of them easily. Not only are these minuscule creatures hard to spot, they are hardy and drop hundreds of eggs each time they reproduce.
If you are looking to eliminate chiggers in a specific area, a commercial pesticide will do the trick, but nature provides its own type of pest control. They share natural predators with other mites. These include certain species of ants, centipedes, spiders, beetles, birds, lizards and salamanders, and other small creatures who live in or near the moist soil in forests, meadows, creek banks and marshes where chiggers populate.