How to clean a new lunch box for the first time

Before the first use of the new lunch box, it needs to be thoroughly cleaned with neutral detergent and dried. The initial cleaning of a new lunch box should focus on the material characteristics and disinfection methods, mainly including soaking in warm water, removing odors with white vinegar, cleaning with baking soda, sterilizing with boiling water, and natural ventilation.

1. Soak in Warm Water

After disassembling the lunch box, immerse all components in warm water at around 40 ℃ for 10 minutes to soften the industrial dust-proof oil film remaining in the packaging.

2. White vinegar deodorization

Wipe the inner wall with a mixture of white vinegar and water in a ratio of 1:3. Acetic acid can neutralize volatile substances and odors during plastic processing.

3. Baking soda for cleaning

Mix edible baking soda into a paste and gently wipe the joints. The weak alkalinity can decompose the dust and impurities adsorbed during transportation and storage.

4. Boiling water sterilization

High temperature resistant materials can be scalded with boiling water for a short time, while polypropylene materials need to control the contact time within 30 seconds to avoid deformation.

5. Natural ventilation

After cleaning, invert and drain, then open the lid and ventilate for more than 12 hours to ensure that residual moisture and chemicals are fully evaporated.

It is recommended to choose food grade lunch boxes and regularly replace the sealing rings to avoid scratching with hard objects such as steel wire balls. Before long-term storage, it should be ensured that it is completely dry. Stainless steel lunch boxes can be regularly cleaned with citric acid to remove scale, while glass lunch boxes should be careful of the risk of bursting caused by excessive temperature differences. If scratches or fogging are found on the plastic lunch box, it should be replaced in a timely manner to prevent bacterial growth.