Some of the full-time road warriors do launder their clothing that way. We have an excess of easily-available rough roads around here, but they rattle the daylights out of some of the components. (The inverter really gave us a scare last week—or was it the week before?) I’ll do the plunger thing if necessary. “That which does not kill you....” I appreciate the suggestions! You are a constant source of enlightenment.
Sometimes I want to find the authors of those aphorisms and give them a swift kick in the patootie. In my experience, that which does not kill you often makes you wish it had.