How to best wash your Stainless Steel Vacuum Insulated Bottle, Coffee Mugs & Tumblers

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Best Way to Wash Your Stainless Steel Vacuum Insulated Bottle, Coffee Mugs & Tumblers


We are already suffocated by too much plastic, so if you want to do something for the environment and for your health, opt for a hydro flask, insulated water bottle, or stainless steel coffee mugs. These items can be washed and cleaned and reused for an unlimited number of times. No more plastic wastes, no more germs that can’t be cleaned off, and no more money thrown out of the window.

If you take good care of your stainless steel bottle, coffee mug, and tumblers, they are the kind of items that will be around you for many years to come. So, continue reading and find out the best ways to keep these items clean and the most appropriate methods of washing and cleaning each item.

Why washing is necessary?

It is very important to keep your Hydro Flask bottle clean due to the following reasons:

Maintaining Hygiene – Constant exposure of the bottle to saliva and food contamination can make the thermos flask prone to bacteria and fungi accumulation. It is always exposed to a number of germs thus to ensure good health regular cleaning of the bottle is very important.

Fighting Odor – Filling your flask continuously with drinks can leave an unpleasant smell. Therefore, use specific cleaning agents such as vinegar or soda to remove the odor from the bottle.

Protecting Discoloration – Filling of the container with colored drinks like juices and coffee can lead to discoloration if not cleaned regularly.

Precaution for selecting the right way of washing

It is extremely easy, simple, and fast to wash a thermo flask or hydro flask. All you need is some dish soap and warm water to get the job done. Just make sure to remove all the parts your flask so that they can all be properly washed. So, yes, all the parts should be taken apart and washed with warm soapy water. This will make sure that there won’t be any debris left that can make your hydro flask or thermo flask smell awkward.

Besides warm soapy water, it is also recommended to use a special bottle brush. This will enable you to give the flask a good scrub with minimum effort, cleaning even those tight little spaces and parts. Are you not too keen on washing your flask with soapy water? Then you can always do it the good old fashioned way, by making a paste out of baking soda and water.

This is also an effective cleaner, being natural and safe at the same time. With a small brush and this paste, you can give your hydro flask a good scrub. The baking soda powder is extremely effective when it comes to removing all kinds of debris, so make sure to scrub even those hard to reach corners.

After you’re done scrubbing your flask, just rinse it off well. The best part about using baking soda is that you don’t have to worry if there will be any left, as it is not dangerous for your health.

Some Essential Tips for cleaning Thermos Flask

  • Use warm water and washing-up liquid to clean your flask after use. Rinse thoroughly with hot water. Do not immerse in water. Dry it thoroughly after leaving it to drain. Always store with the stopper off.
  • Do not use chlorine and bleach as cleaning agents for the container as harsh chemicals can damage the stainless steel body of the flask.
  • Do not soak the exterior parts of the bottle in hot water, can lead to damage.
  • Don’t put your flask in a dishwasher.
  • Do not submerge the thermos in water as it could get between the liner and the bottle.

Ways to wash

There are number of methods and cleaning agents can be used to keep your Thermos Flask clean. Some of these methods include:

Use Ice and Salt for cleaning

  • Fill the Thermos about 1/4 full of ice (smaller cubes will give better results).
  • Further, add 2 to 3 tablespoons salt
  • Cap the flask and shake it well
  • Discard the content and rinse the bottle well.
  • Air-dry the bottle completely before usage.

Use dish soap to clean thoroughly

  • Firstly, disassemble the Flask to clean it.
  • Wash all the pieces of the flask separately with hot, soapy water.
  • Rinse all of your Thermos bottle container pieces thoroughly.
  • You can use a dishwasher to wash a flip lid or a wide straw lid.
  • Completely air-dry all the pieces of the container.

Use Vinegar to remove bacteria

  • Pour half cup of vinegar inside the flask.
  • Use a bottle brush to scrub hard all the sides of the bottle.
  • Rinse the container thoroughly with warm water.
  • Air-dry the flask upside down.

Use Baking Soda to remove tough stains

  • Mix 2-3 tablespoons of baking soda with warm water and form a paste.
  • Scrub the inside walls of the flask with the paste
  • Rinse the flask thoroughly with warm water.
  • Dry the flask completely upside down.

Getting Rid of Hydro Flask Smells

Why does a hydro flask get smells? Or perhaps you are wondering why your flask developed a foul smell in spite of the fact that you did wash it well. In spite of the fact that we are talking about stainless steel vacuum insulated water bottle, smells can develop in time. This is due to the fact that the bottle or flask is composed out of small parts that are meant to keep liquids in at the same time, in order to preserve their temperature for longer.

Well, if these parts are not cleaned properly or often enough, they can end up giving the entire bottle a weird smell. But, don’t fret, as there are ways to get rid of this unpleasant part in no time. The best part to get rid of the hydro flask smells is by using a solution made out of water and vinegar. Yes, the ordinary vinegar is the best remedy for bad odors.

Use water diluted vinegar to fill your hydro flask or thermo flask up to the top. Leave your flask this way overnight. In the morning, give the flask a good shake and then rinse with plenty of clean water.

Are hydro flasks dishwasher-safe?

In case you have a dishwasher, most certainly you wonder if it is safe to put your hydro flask inside for a thorough cleaning. Well, the truth is that not all hydro flasks are suitable to be used inside a dishwasher. First of all, you need to take into account the finishing of your hydro flask. In other words, if you have a painted or glossy hydro flask, putting it in the dishwasher may ruin its aspect.

Thus, only brushed stainless finish can be safely washed inside a dishwasher. Secondly, the mouth of the flask should be wide enough to allow the water jets inside the dishwasher to clean it right. So, in case you do have a wide-mouth hydro flask, then you could wash it this way.

Of course, always check the recommendations of your flask’s manufacturer when it comes to finding out whether the product is dishwasher-safe or not.

Focused ways to wash different Hydro Flask

Coffee Mug

Stainless steel coffee mugs are great because they are extremely resistant and have the ability to keep your beverage warmer for longer. But, they can end up smelling bad after a while and build residues on the inside. You see, coffee tends to create a greasy residue can will start adhering to the walls of the mug and coffee pot as well.

To properly clean stainless steel coffee mugs, you just need to follow a few simple steps. Take two tablespoons baking soda and place them inside your steel coffee mug. Then, take some apple cider vinegar or white vinegar, about a fourth of a cup, and pour it into the coffee mug, over the baking soda.

As the two come together, they should sizzle and form foam. This is precisely the process that will clean, disinfect, and remove odors from your mug. To make things even more effective, close the lid of the mug and shake the mixture well for 5 minutes. Then throw the content out and rinse your mug with hot water. To make sure that there isn’t any baking soda left on the inside of the mug, wipe it with a piece of clean cloth and rinse it some more.


For tumblers you should check the specifications and recommendations of the manufacturer.

Some tumblers can be washed this way while others are not made to be used inside a dishwasher. Personalized tumblers, with custom prints, are not at all suitable for the dishwasher. Dishwashers are so effective at removing grease from your kitchen wear because they use abrasive detergents and high temperature, which are capable of stripping greasy residues from any surface. But, this powerful action can damage your tumbler.

Besides this, do not forget that tumblers are made to insulate your beverages, keeping them warm for longer. This means that such a product has two layers of walls, with some space in between. Well, the water pressure inside the dishwasher can push some water between these walls, promoting all kinds of unwanted growths in places where you can clean them out.

Thus, before you make a purchase, it is worth checking this kind of details, so that you’ll end up with the desired type of product.

Coffee Pot

Just like stainless steel coffee mugs, coffee pots made out of the same material are sturdy items that will offer warm coffee hours in a row. But, the inside can get quite dirty, so you need to adopt the right technique if you want to keep your stainless steel coffee pot clean and odor-free at all times.

With the help of all the previous guidance, we hope that your stainless steel bottle, coffee mugs, and tumblers will be clean and odor-free for you to enjoy on a daily basis. As you can see, it is not difficult to wash this type of items. They are more than capable of offering not just warm or cool beverages for hours, but also a safe, sterile, and clean environment to store your beverages, regardless of external factors, for longer periods.