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Customer Review
Reviewed in the United States on January 19, 2019
I tried one of these in an old travel coffee mug that isn’t “dishwasher safe”. I wash it by hand, but I can never get rid of the brown coffee stains on the inside. Holy cow, did this stuff make a difference! The inside of the mug basically looks brand new. I think they’re a little expensive for what they are, but I can’t argue with the results.
