The Emerald Ash Borer is slowly making its way west, leading to new regulations regarding the sale of firewood. Under the new rules, firewood would have to indicate state and county of origin and also harvest location. Chad Roesen, a Ranger with Elk Rock State Park says the new rules are intended to help curb the spread of the insect, which destroys ash trees by way of lavae feeding on the inner bark. He says the EAB first showed up in Michigan several years ago and finally reached Iowa last year, first in Allamackee county. He says the new rules will hopefully slow expansion of EAB, but it will likely come through.