Idaho state officials say they haven’t found viable quagga mussels since latest treatment

State officials have not found any viable quagga mussels since the state administered the most recent copper-based treatment in the Snake River near Twin Falls this fall, Idaho State Department of Agriculture Director Chanel Tewalt said Monday. Quagga mussels are an invasive, nonnative species that Department of Agriculture officials first detected in microscopic larvae form […]