1. Wash with salt: apply edible salt on the inside, especially where there is tea stains. use
Brush vigorously with a toothbrush, and finally rinse with clean water.
2. Wash with toothpaste: Squeeze the toothpaste on the gauze, and scrub the stained filter
If the effect is not obvious, you can squeeze some more toothpaste to wipe it.
3. Wash with baking soda: Wipe the filter screen with a soft cloth dipped in baking soda, and rinse with water.
