I never dip unless I'm sending. That should be the supplier's job to deliver satisfaction in cleanliness.
I would watch with all the humidity, for mold on new rhizomes. It doesn't take long for it to settle in. A couple nights of sitting in a truck in the dark can do this or if poorly dried. What will the mold do? I don't know, but I would scrub it off in bleach/h2o then.
