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Why is potassium permanganate used to kill mollusks?

I know that potassium permanganate is used as a disinfectant for bacteria. Permanganate acts as a strong oxidizing agent that can rip the electrons off of bacterial cell membranes, resulting in a disruption that can lead to death. I’ve also read that potassium permanganate can be used as an oxidizing agent to kill mollusks (source: http://www.chemistry.wustl.edu/~edudev/LabTutorials/Water/PublicWaterSupply/PublicWaterSupply.html). I’ve tried looking into it and I can’t find anything helpful. Does permanganate kill mollusks in the same way? If that is the case, will the disruption of the outer cells of the mollusks really kill the whole organism? Any insights would be helpful, thanks in advance!

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