I have a old beach cruiser I bought on the cheap solely for playa use a few years ago. But it sounds like this year is going to be dusty and some gear options might be a good thing to have. The beach cruiser was positively unridable in many places at a particular dusty Burn a couple years ago.
So I'm toying with the idea of bringing my mountain bike. It's not a high-end bike by any means. An 20 year old but good condition frame, high-end in its day, with newer parts that are on the low-end of sport quality. In short, it is a functional mountain bike and I would like to keep that way.
I'm thinking I might take it and when I get back take it apart and give it a thorough cleaning. Has anyone had experience with this? I know the alkalinity is terrible for metal parts, but I figure maybe if I wash soon after I get back it might not be a big deal. Is it an OK idea? a terrible idea?
( I'd be a bit more careful about theft than I might with the old beach cruiser of course. )

