I worked at a restaurant in the kitchen. We had a place on the wall to hang brushes. The GREEN brushes were to be used for food/prep areas only. The white brushes were for cleaning toilets, and other filthy places.
The white brushes were soaked in buckets and rinsed/washed thoroughly in a slop sink, then later, put in the racks that push through the dishwasher conveyor belt that ran through the machine if I recall correctly. It’s been more than 20 years
We had the knob but it broke off. So we had a pair of pliers sitting on top of the TV to turn the dial (from 2 through 13).
My friends weren’t as poor so they’d have a converter box. It had an actual remote and that sound it made as it flipped through all the channels. I can’t even describe the sound but if you know, you know it.