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waytooo t1_ixz7k1z wrote

I own a similar one for 5 years, the heat retaining is great. My only complain is the stains on the lid. I only drink water with it, but the plastic part (I guess that’s silicone) on the lid that’s attaching the opening has black dots overtime, and I can’t wash it off somehow. Both vinegar and baking soda don’t work. Then my friend who bought together with me told me he has the same issue. I’m wondering if it’s just us, and anyways to clean it up?

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home_cheese OP t1_ixz8gdx wrote

I use denture cleaning tablets. Fill with hot water, drop in all of the seals with two tablets, place the stopper and top up so the water is touching the bottom of the stopper. Let sit overnight and brush out in the morning. Though sometimes I put all of the plastic pieces in a separate container so they're fully submerged.

You could give that a try.

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waytooo t1_ixzby7s wrote

Thank you for the tips! I will give it a try. I was about to buy new one but this concerns me. If it can be cleaned up, definitely will buy more.

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