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  • davidkichi commented on noahw's instructable 5 Ways to Clean a Funky Water Bottle6 months ago
    5 Ways to Clean a Funky Water Bottle

    I wouldn't keep a thermos in the freezer and then take it out and pour hot water into it, the metal will react to the different temperatures and warp as will the plastic lid and rubber seal. Just add some water after you pour hot liquid into half of the thermos to cool it down instead of pouring hot water to the brim. If you ever want to have it hot for a long time, then pour all hot water and when you get to your destination then uncap it and let the steam escape so it'll cool down gradually.

    I love all the different ways of cleaning it whether using chemicals like bleach/lye or chemical free ways like salt & lemon juice & crushed ice, vinegar and hot water soak, baking soda and warm water soak, sand and hot water, bottle brush & hot water & detergent,etc... I think for something really dirty and germy, I'd avoid using the brush since all the nasty stuff would stick on it and you'd have to clean it too afterwards. I've personally tried the vinegar and hot water soak in a tea/coffee stained thermos with the lid off overnight and the next day the inside was like brand new. Pouring sand with some type of liquid and shaking it till you break out into a sweat is another good solution especially for containers with a bottleneck when you don't have a wire/bottle ...see more »I love all the different ways of cleaning it whether using chemicals like bleach/lye or chemical free ways like salt & lemon juice & crushed ice, vinegar and hot water soak, baking soda and warm water soak, sand and hot water, bottle brush & hot water & detergent,etc... I think for something really dirty and germy, I'd avoid using the brush since all the nasty stuff would stick on it and you'd have to clean it too afterwards. I've personally tried the vinegar and hot water soak in a tea/coffee stained thermos with the lid off overnight and the next day the inside was like brand new. Pouring sand with some type of liquid and shaking it till you break out into a sweat is another good solution especially for containers with a bottleneck when you don't have a wire/bottle brush handy.

    I forgot to add that periodicly removing the rubber seal from the thermos cap and brushing everywhere with a tooth brush to get rid of the built up gunk is a must.

    Reattaching the rubber seal gasket is tricky as you have to stretch it with a knife of some sort for immediate effect. If time wasn't important perhaps the cap can go into the freezer for some time and possibly shrink it a tiny bit and the rubber seal gasket should soak in hot water expanding it in hopes it'll slide right on in theory.lol

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