First, I am going to assume you use a blunt tipped needle bottle or syringe to fill it, if not you will need one or the other - empty. Use the bottle or syringe to pull as much
juice as you can out of it, remove the tip, rinse 2-3 times with as hot a water as your hands can take, shake out as much water as you can, let air dry for one hour, then dry burn it. Do not put the tip on, attach the battery, activate it for 2-3 seconds, pause for 5 seconds, repeat until you can look down it and see the coils glow orange and, no or very little vapor or smoke comes out of it. Fill with desired
juice, put tip on, vape away.