The movement of untreated firewood can lead to the spread of invasive pests and diseases, which could devastate Michigan's agriculture and forestry sectors. These pests can damage crops, trees, and ecosystems, resulting in significant economic losses and environmental harm. Campers and outdoor enthusiasts are particularly urged to follow the guidelines, as their activities often involve transporting firewood across regions. The potential impact extends beyond agriculture, affecting biodiversity and the health of Michigan's forests.