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Eight steps to properly clean your thermos

Insulated cups have become an indispensable drinking companion in daily life due to their portability and heat preservation properties. However, the cleaning of insulation cups is often neglected, resulting in bacterial growth and odor. In this article, we will introduce how to properly clean the insulation cup, to maintain its cleanliness and hygiene.

Daily cleaning steps:

1. Empty the insulation cup: first, empty the liquid inside the insulation cup to ensure that there is no residue in the cup.

2. Warm water pre-wash: Pour warm water into the thermos, shake gently, and let the water temperature and water flow to help loosen the stains inside the cup.

3. Add detergent: Drop a small amount of detergent into the cup and shake again to fully dissolve the stains.

4. Use a cup brush to clean: Stick a long-handled brush inside the cup and carefully scrub the walls and bottom of the cup to make sure every corner is cleaned.

5. Baking soda to remove odor: If the insulation cup has an odor, you can use baking soda and water to make a paste, apply it to the inside of the cup, and let it sit for 10-15 minutes.

6. Thorough rinsing: Rinse the thermos thoroughly with water to ensure that the detergent and baking soda residue are completely rinsed out.

7. Sterilize: You can choose to sterilize the thermos in a sterilizer or use a food-grade disinfectant to sterilize it.

8. Natural drying: Place the cleaned thermos upside down on a clean towel and let it dry naturally or use a clean cloth to wipe it dry.


1. Avoid using hard brushes or wire balls that may scratch the inside of the thermos.

2. Do not use cleaners containing chlorine as this may damage the inner coating of the thermos.

3. After cleaning, make sure the thermos is completely dry to avoid harboring bacteria.

4. Avoid exposing the thermos to extreme temperatures such as direct sunlight or freezing.

5. Avoid dropping or hitting the cup to avoid damage to the cup or seals.

6. Do not store acidic or alkaline beverages such as carbonated beverages, lemon juice, etc. in the thermos, as this may corrode the interior.

7. Avoid storing dairy products or sugary drinks for long periods, which may harbor bacteria or produce off-flavors.

Periodic Inspection: 

Regularly inspect cup lids and seals to ensure there are no cracks or damage.

Regularly check lids and seals to ensure no food residue or stains have accumulated.

Regularly check the sealing performance of the thermos to make sure there is no water leakage.