27 мар. 2023 г. · Wash it with hot soapy water first, to remove any residue. Rinse. Then fill it with vinegar to the brim and put the lid on. Let it sit overnight ...

14 мар. 2023 г. · Method 1 of 3:Using Baking Soda and Vinegar Pour about half a cup (120ml) of distilled white vinegar into your stained flask.

24 янв. 2023 г. · Wash it with hot soapy water first, to remove any residue. Rinse. Then fill it with vinegar to the brim and put the lid on. Let it sit overnight ...

2 февр. 2021 г. · Wash the thermos flask with soap and water using a soft brush carefully. Then rinse out the soap completely using drinking water.

21 авг. 2011 г. · The best way to clean a flask is with boiling water and either a teaspoon of baking soda or crumble up a denture cleaning tablet.

7 сент. 2023 г. · By a box of denture cleaning tablets. Fill the bottle 2/3 with water and drop a tab. Cap loosely and shake. Let sit. Rinse and air dry. Off ...

26 янв. 2021 г. · Store it where it is insulated even more. Carry it inside your coat not outside. The more you can isolate it from the environment the better it will work.

12 июн. 2018 г. · I usually water down some soap and baking soda, add that to the bottle, shake it hard, and flip it over to sit for a while.

26 авг. 2019 г. · Take the lid off the mug and dump in one or two teaspoons full of baking soda. Then add a generous amount of vinegar. A couple good double-shots ...

3 апр. 2021 г. · Lemon juice: Squeeze the juice of a lemon into the flask, add some warm water and shake the flask to allow the lemon juice to coat the inside.