How to Clean a Thermos Flask

A thermos flask is a popular and handy way to stay hydrated during the day. It’s a great accessory as you drink coffee, tea, or just water. But, how often do you think about cleaning your thermos?

Below are some helpful tips for washing out that thermos and making sure it lasts for years. How does this help you? It helps because it will make your drink taste better and keep the metal from rusting over time. Easy! Learn the basics of how to clean a thermos and what not to do so that you can take care of your favourite container today!

Why Should You Clean a Thermos Flask?
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Why Should You Clean a Thermos?

A thermos flask is a great way to keep your beverage warm, but it should be cleaned every week to prevent bacteria from growing on the inside. Still not convinced?

There are many reasons why you should clean it. The first and most important is that you don’t want bacteria in your drink. It’s easy to stop that from happening. How, you might ask? Simple. Clean it! Keeping the thermos flask clean will also improve the quality of your drink. Aside from that, a properly cleaned thermos will help prolong the life of the metal. Thus, preventing it from rusting.

P.S. Routinely cleaning a thermos flask, like almost everything else, will make it look like new. That way you’ll more-or-less get a new thermos almost without spending a dime!

mom and daughter smiling
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How to Clean a Thermos

Cleaning a thermos is not a difficult task when you know what to do. You can clean your thermos with hot water and soap or baking soda, salt, or lemon juice. You can also buy a special cleaning product specifically designed for the task. Choose something that is accessible to you.

Here’s a short guide on general care for your thermos flask. First, fill the thermos with warm water and add a dab of dish detergent. Rather than submerging the thermos in water,  opt to fill it in. Allow the dish detergent to soak for five minutes to remove any crud. Then, wrap a dishrag or a microfiber cloth around the bottle scrubber. Use it to gently scrub the thermos flask. Rinse with warm water. And finally, wipe the inside of the thermos and allow it to air dry.

frogs on things not to do to a thermos flask
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What Not to Do with a Thermos

It’s important to know how to take care of your stainless thermos. Otherwise, you could destroy the liner. As a matter of fact, learning how to do something properly is never complete without learning what not to do. So, here are some things you should avoid when washing out that thermos.

Don’t wash your thermos in the dishwasher. The dishwasher will cause the rubber gasket to deteriorate and make it difficult for the lid to seal properly. Avoid using abrasive or scouring materials on your thermos. These will scratch the inside of your thermos and ruin it! Aside from that, don’t store soup in your thermos for more than 12 hours. This is because storing soup in a hot container could cause toxins from the plastic leach into the food. Bleach can also be hazardous, so avoid using it!

smiley face for the conclusion
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We hope that you have enjoyed this article on how to clean a thermos flask. Once you get the hang of it, it’s actually pretty simple to do. Basically, use a tad bit of soap or dish detergent, warm water, and avoid using abrasive material to clean it.

A stainless-steel thermos is a great way to store both hot and cold beverages. It’s basically a must-have item, both for professional and personal life.

Like your drinks at the perfect temperature at all times? A self-heating travel mug or bottle is the perfect solution for you! Check out Muggo to find the perfect self-heating cup, mug, and bottle.

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