Keep a bucket of bleach water nearby to sanitize it.
But that's just me.
/johnny
That's okay, too. I don't understand people who think there's only one way to do something. With survival in mind, I have at least three ways to accomplish most everything. I haven't searched for a sponge on a stick. That would be interesting if I found one. Might find one in bathroom supplies to be used for cleaning the body (not that part of the body) or cleaning the tub.