EAB can be spread through the movement of infested ash nursery stock, ash firewood, and other ash material. To prevent artificial movement of infested articles, the Federal Government enacted an EAB quarantine, restricting interstate movement of ash nursery stock, ash limbs and branches, ash logs or untreated ash lumber with bark attached, uncomposted ash chips and uncomposted ash bark chips larger than 1 inch diameter, and all species of hardwood firewood.