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166
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ranked #202,271 most helpful out of 571,544,897 reviews
★☆☆☆☆
Black mold buildup
My 6 year olds have been using these about a month. I tapped it on the sink and noticed black stuff coming out of the slit in the back. I continued tapping and more and more came out... I will not use these ever again.
January 2016 · Health and Household
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