INVASIVE SPECIES: New pesticide could hold key to removing zebra mussels Published: Thursday, June 12, 2014 Researchers plan to test a biological pesticide that could stop the spread of an invasive mussel species in Wisconsin. Please subscribe to Greenwire to read the full story. Username: Password: Forgot your access codes? Recover them. Not a subscriber? Sign up for a trial. Ready to subscribe? Click here.