Watercraft are the primary means that AIS, especially zebra and quagga mussels, are transported and therefore are the greatest risk for spreading AIS to and within Wyoming. We do not yet have any confirmed waters with invasive mussels, but waters could have mussels in them before we can detect them. So, all watercraft present a risk for transporting AIS. It is very important for all boaters, even those only boating in Wyoming, to follow the Drain, Clean, and Dry protocol.