lol.. I've heard of people cleaning them and refilling for quite some time. One thing worth noting whether it's atty or carto. Performance sometimes decreases slowly so you don't always realize how much performance is down. If you find yourself not as satisfied with your ecig...first thing I say to try is a new carto/atty/whatever you're using. If still feeling like you're lacking then it might be time to try something new. I think you stick with whatever works for you until it doesn't work for you any longer