Chemical fails to kill zebra mussels in 2 lakes

Efforts by the Minnesota DNR to stem two budding zebra mussel infestations through chemical means have yielded – at best — mixed results. The DNR used copper sulfate to treat two lakes – Rose and Irene – in Otter Tail and Douglas counties last fall after a few immature zebra mussels were found in the … Read more Chemical fails to kill zebra mussels in 2 lakes