• CEOofmyhouse56
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    10 months ago

    I wash mine weekly. It’s metal and there’s no straw so it’s basically a thermos. I only have water in mine.

    • Baku
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      10 months ago

      That makes me feel a little better. Mines also metal with no straw and only ever has filtered tap water in there

      • CEOofmyhouse56
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        10 months ago

        The main bit to look after is the rubber seal if it has one because they can get moldy. So wash it with soapy water and rinse, rinse, rinse and let it dry naturally overnight if you can.