I have seen it a few times, people bring in firewood and all of a sudden we have PowderPost Beetles or something else coming out of the wood. I have also seen the Arizona Fish and Game send out flyers and web information on the spread of quagga mussels on the bottom of boats. Here are two stories or updates on these issues.
It is really important to recognize that animals, wildlife and pests can travel. Just like Fire Ants in potted plants or termites in lumber or other materials. So always stay vigilant and be on guard against invasive species.