For visitors to the National Park unfairly voted the worst to visit due to its many mosquitoes, there is a way to anticipate just how bad these biters may be. The Mosquito Meter or “Skeeter Meter” at Congaree National Park near Columbia, South Carolina has six levels: All Clear, Mild, Moderate, Severe, Ruthless, and War Zone. Rangers manually change the Skeeter Meter. With the Skeeter Meter and educating people about safely visiting Congaree, the park has embraced their reputation for mosquitoes instead of fighting it. Credit: National Park Service.