ALEXANDRIA, Minn. (WCCO) — The DNR may have a new weapon against an invasive species that’s threatening Minnesota lakes.

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Zebra mussels suck up Zequanox, as they think the solution is food.

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But in actuality, Zequanox is dead bacteria cells that kill the mussels.

So far it has worked to keep pipes mussel-free. That’s why the DNR wants to know if it could work in a lake.

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Beginning Friday, the DNR will test Carlos State Park in Alexandria, Minn.