Remove Stains From Your Coffee Thermos: By Using 4 Useful Methods

Vietnamese Coffee Exporter
Clean Your Coffee Thermos and Remove Stains: By Using 4 Useful Methods

Clean Your Coffee Thermos and Remove Stains:

4 Effective Methods to Clean Your Coffee Thermos and Remove Stains: Keep your coffee thermos fresh and stain-free with these simple tips!

A reliable coffee thermos is indispensable for keeping your favorite brew at the perfect temperature, whether you’re commuting, hiking, or simply at work. However, cleaning a thermos can be a challenge due to its shape and the materials it’s made from. But don’t worry! Here are four proven methods to effectively remove stubborn coffee stains and unwanted odors from your thermos.

The Best Ways to Clean the Inside of a Thermos

You’re in luck! Cleaning a coffee thermos can be quick and easy, and you don’t need to resort to harsh chemicals. These four methods have proven successful in making the inside of my thermos sparkle like new.

If your thermos is beyond saving, consider investing in a new one. Check out our recommendations for the best coffee thermoses and top travel mugs for coffee lovers.

 Method 1: The Vinegar and Baking Soda Method

What You Need:

– ½ cup distilled white vinegar
– 1 tbsp baking soda
– Hot water


1. Pour the vinegar into your thermos. Slowly sprinkle the baking soda over the vinegar to control the foaming reaction. Perform this step over a sink to avoid spills.
2. After the fizzing subsides, fill the thermos with hot water and let it sit for about 10 minutes without the lid.
3. Scrub the inside of the thermos using a bottle brush.
4. Empty the contents and rinse thoroughly with hot water until the vinegar smell is gone. Let the thermos dry naturally.

Method 2: The Denture Tablets Method

What You Need:

– 1 or 2 denture tablets
– Boiling water


1. Fill your thermos with boiling water and let it sit for 10 minutes to loosen any dirt.
2. Pour out half the water and add 1 or 2 denture tablets. Do this in the sink to manage the foaming reaction.
3. Let the thermos sit for about 30 minutes with the lid off. Then scrub the inside with a bottle brush.
4. Rinse thoroughly to remove any residue and let it dry without the lid.

Method 3: The Dishwasher Powder Method

What You Need:

– 1 tbsp of dishwasher powder (not liquid)
– Hot water


1. Add the dishwasher powder to your thermos and fill it halfway with hot water. Close the thermos and shake briefly.
2. Fill the thermos to the brim and let it sit overnight (or at least a few hours) with the lid off.
3. Empty half the liquid and scrub the inside with a bottle brush.
4. Rinse thoroughly and let it air dry.

Method 4: The Salt and Ice Method

What You Need:

– Ice (crushed or cubed)
– 2-3 tbsp of large-grain salt (like sea salt or Kosher salt)


1. Fill the thermos with crushed ice up to a quarter of its volume.
2. Quickly add 2-3 tablespoons of salt over the ice to avoid melting.
3. Secure the lid and shake the thermos vigorously. The ice and salt will exfoliate the inside without causing damage.
4. Empty the thermos, rinse thoroughly to remove any residual salt and ice, and let it dry naturally with the lid off.

Clean Your Coffee Thermos and Remove Stains: Final Thoughts

Now you have four easy and practical methods to keep your coffee thermos spotless. Remember, prevention is key—rinse your thermos with warm water as soon as you finish your beverage to prevent coffee residue buildup.

Preventative Maintenance Tips

In addition to these cleaning methods, maintaining your thermos regularly can help keep it in top condition. Here are some preventative maintenance tips to ensure your thermos stays clean and functional:

1.Regular Rinsing : Rinse your thermos with hot water after every use to prevent coffee residue from building up. This simple step can significantly reduce the need for deep cleaning.

2.Drying Properly**: Always allow your thermos to dry completely with the lid off. This prevents moisture from getting trapped inside, which can lead to unpleasant odors and mold growth.

3.Avoiding Harsh Chemicals: Stick to natural cleaning agents like vinegar, baking soda, and salt. Harsh chemicals can damage the lining of your thermos and affect the taste of your coffee.

4.Using a Brush: Invest in a good bottle brush that can reach all the nooks and crannies of your thermos. This makes it easier to scrub away any stubborn stains or residues.

5.Frequent Deep Cleans: Even with regular rinsing, it’s a good idea to deep clean your thermos once a week or at least once a month, depending on how often you use it.

By following these methods and tips, you’ll ensure that your coffee thermos remains clean, odor-free, and ready to keep your coffee tasting fresh all day long.