(Providence, RI)--The Rhode Island Department of Environmental Management is alerting pet shops and fish tank owners about an invasive species presence in certain products sold in stores.The Zebra mussel has been found in "moss balls", an aquarium plant product sold nationwide.The RI DEM notified more than fifty businesses over the weekend of the possible contamination.The state says the moss balls must be destroyed only by freezing, boiling or bleaching them and then disposing of them in the trash in a sealed container.
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