I went camping on a Friday, and forgot to bring fresh underwear. I thought my panties would walk by themselves before I got home on Monday as Soiled they were. I threw them in the laundry pile when I got home, and the next day they were still in the pile, and noticeably not clean. That was my first experience with truly dirty panties. You cant imagine how it felt on Saturday and Sunday, after washing in the campground shower, when I put those dirty panties back on.
Be patient.
Japanese scientists are presently working on
panties constructed of a 'space age material'
that need no laundering for weeks on end.
No (s)kidding!