How to wash the yellow stains on the underpants:
The newly changed underpants can be soaked in warm water, and then gently scrubbed. Generally, the yellow stains on the underpants can be cleaned.
If the yellow stains on the underpants are dry, you can apply the detergent on the stains, let the detergent completely cover the stains, then let it stand for a while, and then scrub it clean.
Wet the underpants, then apply toothpaste on the underpants, gently scrub, scrub the stains, and then rinse them with water.
When cleaning underwear, put some salt in clean water to remove the yellow stains on the underwear, as well as the disinfection effect.
Precautions The texture of underpants is generally soft and small, and they can only be thoroughly washed by hand.
Do not mix with other clothes when washing, to prevent being dyed by other clothes, or contaminating other clothes with stains.