1. White vinegar cleaning method
Empty the thermos and add an appropriate amount of white vinegar (about one-third of the cup capacity). Shake the cup to ensure that the white vinegar fully contacts the cup wall and bottom. After standing for ten minutes, pour out the white vinegar and rinse thoroughly with clean water. White vinegar can not only remove odors, but also remove stubborn stains.
2. Baking soda cleaning method
Add an appropriate amount of baking soda (about a quarter of the cup capacity) to a thermos, add a small amount of water, and shake the cup to fully dissolve the baking soda. After standing for a period of time, pour out the baking soda solution and rinse thoroughly with clean water. The alkaline properties of baking soda can neutralize acidic stains.
3. Toothpaste cleaning method
Squeeze an appropriate amount of toothpaste onto the inner wall of the thermos, gently brush with a toothbrush or soft cloth, especially in areas with heavy stains such as the cup mouth and bottom. After brushing, rinse thoroughly with clean water.
4. Eggshell and citric acid method
Crush the eggshell and place it in a thermos. Add warm water and shake the thermos. The calcium carbonate component in eggshells can soften dirt. Alternatively, use citric acid and soak in an appropriate amount of hot water for forty minutes, then rinse thoroughly with clean water. Citric acid can not only quickly remove stains, but also make the thermos emit a faint fragrance.
5. Other methods
Using materials such as rice washing water, white vinegar, vinegar, baking soda, lemon juice, etc. can also effectively remove scale. Rice washing water contains substances that decompose dirt, while lemon juice is a food grade acid that can effectively remove scale.
6. Suggestions for preventing scale formation
Regular cleaning of insulated cups can effectively prevent the accumulation of scale. Clean it promptly after use to avoid storing water in a thermos for a long time, which can reduce the formation of scale. In addition, choosing appropriate cleaning tools and methods is also important to ensure cleaning effectiveness and protect the material of the insulated cup.
