To clean a thermos easily, drop in four Alka Seltzer tablets and let soak 1 hour or more, then rinse.
By Monica from Cortez, CO
How do you get the hot chocolate flavor out of a thermos?
If it is a stainless steel thermos, use baking soda and hot water. Otherwise, use diluted white vinegar and let it dry out.
I would use baking soda and let it air out for a few days as well.
Wash with soap and water, and rinse well. Then fill it back up with a water and vinegar mixture and let that sit in it for about 8 hours, then rinse back out and let it air dry.
Baking soda and water, but with lemon juice will do the best job.
This is a page about cleaning a stainless steel thermos. Tea and coffee are common beverages kept in a thermos. Both can leave stains inside.
My husband has a flourishing thermos, but somehow the lid with spout now smells and tastes like burnt coffee. How do we get rid of it?
By Suzie D
I used baking soda and ice cubes to clean the coffee residue from inside my glass lined thermos. Within thirty seconds of swirling it exploded, what did I do to get that?
By TV from Spring Hill, FL
Something in there probably reacted with the baking soda, or it was hot when you put the ice cubes in.
I have never heard of cleaning with ice and baking soda. I use ice (crushed) and sea salt, but the glass has to be at room temp to do it. Then rinse when done.
I contacted the company that makes "Simple Green" and was told that their product will not damage a stainless steel thermos.
My thermos has black scale in it and I hope someone out there can help solve my problem. How can I remove this?
By Julie Z. from Kamloops, BC
I just use the denture tablets. Put a couple in the bottom of the thermos and pour boiling water over them and shake the thermos with the cover on. Let sit for an hour or so and repeat this procedure till the water runs clear.
How do you thoroughly clean the pop top (pourable) lid to a stainless steel thermos? I don't see any way to take it apart, but it smells and needs some serious cleansing.
I have tired soaking in dishwater, bleach, and dishwasher detergent. I have wedged it open and put it through the dishwasher. Nothing helps.
By Marnie L.
Have you tried submersing it in hydrogen peroxide for a good, long time? The advantage of hydrogen peroxide is that, in small quantities it is not toxic to people but it can really clean things quite well. So, if there is a trace amount left, you are not going to poison anyone.
Does anyone have some tips on cleaning a dirty (coffee) thermos?
By Sushila
Let it soak in hot water and dish soap in the sink, then scrub.
How do you remove a metallic taste from a stainless steel thermos?
By ERC
The taste is probably not coming from the stainless steel. It is probably coming from the cap or plug which is lined with plastic or rubber.
I have a pop top thermos that doesn't come apart, but I need to clean it. I use it everyday and I need to figure out how to clean this. I don't want to buy a new thermos. Can you help me? Thank you.
By Yvonne
My son left a new stainless steel thermos in a friends car for several days with a small amount of hot chocolate in it. I cleaned out the mold by soaking with bleach but some odor still remains. How do I get out the remaining moldy odor?
Try a heavy mixture of boiling water and 1/4 cup dishwasher soap and let it soak overnight, then rinse thoroughly the next day, until all smell of the soap &/Or mold is gone. This may take a few times to completely clean it out.
Kim, from Canada; I use baking soda and water,to get odors out of my thermos, it works everytime. Let it sit, for a while.
Try filling the thermos with plain white vinegar and let it set overnight. Then empty it out in the morning and rinse well.
Thanks for the tips. I'll give them a try and will let you know what works.
What is the best way to remove coffee stains from my thermos?
