I see a reason for some to soak the attys in EverClear or other high% grain alcohol, if you're using juices with sweet flavorings, they do have a way of thickening and clogging up the mesh in the atty. But don't wait too long to do that, if it starts to get sluggish about making vapor it's time for a soak. Then thoroughly rinse, blow them out and let dry, but then re-prime them with a few drops of juice.
But most of the time I just blow mine out, because the liquid trapped in there does seem to thicken or scorch, that's the worse thing. Eventually they will burn out. Be prepared for the worst and have a few on hand. All attys are not created equal!