They, too, can occasionally be washed and wiped dry. If you have completed several shows, and now your props will remain in a closed case for a long time, then it is better to wipe a wand dry. Because it is too bad when they are kept in wet environment. Anyway, it's metal. At least try to open the case when you come back from the show to let them dry little by little.
The same goes for desks (
Props, Desk), and trays. No need to rinse them clean with water each time. If you have the energy and time for this, then do it, if not, then don't even bother. Just wipe them with a dry cloth after the show. It is better to carry disposable rags with you so that you can wipe them immediately. Because, in any case, soap will accumulate on all the upper surfaces. When the water evaporates, an unattractive thick goo will remain. Of course, it's better to clean it all at once.
Well, take care of your stuff as they get dirty and apply reasonable efforts. Our wands are made of stainless steel, so they last infinitely. There will be no corrosion on them.