I’d also be interesting in knowing if people have in-unit laundry. Being in an apartment complex where there’s 3 washers for around 50 people, it’s not feasible to wash towels after every use. That also sounds very wasteful!

I shower every other day, and change the towels after a couple of weeks. The schedule is based on when they can get washed (laundry gets done every two weeks for clothes, and so it’s based on the availability of doing extra loads), or at the first sign of a smell or stain.

Bedding gets changed on a monthly basis for the same reasons, again, unless there’s a smell or stain.

Give it a couple years… and then a few more.

There’s a lot of references to this, but it looks like there’s not a known source. Interestingly, the first reference to this tablet was from 1908. https://quoteinvestigator.com/2012/10/22/world-end/