Can towels be used in the bathroom for a long time without black spots?

Don't forget to put salt to wash dirty towels and give them a stinky smell. Do not hang wet towels in unventilated restrooms.

Personally, it is recommended to take it to the balcony to dry, and put it in a dark and damp place like the bathroom for a long time, as the towel is easy to breed bacteria.

Towels should be rinsed with water after use and put in a ventilated place to dry, and the towels should be cleaned and disinfected regularly, and they can be taken out from time to time to bask in the sun. >>>More

The soles of your feet are dirty, so you can rub them off on a towel. Or the feet are more wet and absorbent, or it is anti-slip, but this is generally used with a towel.

Either it is something black that has been wiped or a black stain formed by mold that has been created by a humid environment. >>>More