In this photo taken on May 21, 2014, Cole Betsinger, 14, left, his father Randy Betsinger, center, and Lee Dallenbach all of Charles City circle around a campfire at George Wyth State Park in Waterloo, Iowa. State Park officials are asking Iowa campers to burn all their firewood to slow the spread of the emerald ash borer. The insect has been found in nine Iowa counties: Allamakee, Des Moines, Jefferson, Cedar, Union, Black Hawk, Wapello, Bremer and Jasper. (AP Photo/Waterloo Courier, Matthew Putney)