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Old-Ranger1405 t1_j8tkaee wrote

Reply to comment by iBo0m in Cleaning a thermos bottom from coffee traces "properly". by iBo0m

I just use the ones from the denture isle at the pharmacy. Sometimes several, and hot water helps too. Good luck!

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green19frog t1_j8uj4sw wrote

I agree with the hot water. Like really hot water. I have had luck with baking soda and hot water before when letting it sit for hours.

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