California agencies battling the spread of invasive quagga and zebra mussels are asking boaters to be especially vigilant over the 3-day Labor Day weekend. Boaters are asked to clean, drain and dry any watercraft and equipment that comes into contact with lakes, rivers or other waterways both before and after boating. Quagga and zebra mussels are non-native freshwater mussels that multiply quickly and can encrust watercraft and infrastructure.
