Quote Originally Posted by thorr-kan View Post
I realize the range is 10 feet, but assuming you're enough, would this be a valid use of the clean a soiled surface function of prestidigitation?
I'd allow it - it's a very clever use of what's often seen as a more flavorful function.

Would every DM allow it? I don't know about that - I could see a lot of them debating whether or not "envenomed" is functionally the same as "soiled." And beware of enemies who have another poisoned arrow/bolt/dart in their quiver, all ready to go.