The state Department of Agriculture has confirmed emerald ash borer in Peoria and Tazewell Counties. The beetle is a destructive pest that kills millions of ash trees in North America. State officials say the finds are significant because they’re showing up for the first time outside the boundaries of a state quarantine zone. Residents should follow quarantine guidelines by no transporting firewood products outside the counties. The state also encourages homeowners to treat or remove any trees they see with the emerald ash borer. A link to useful information in combating the emerald ash borer is available at IllinoisEAB.com.