For longevity and best effectiveness, regularly clean up your Mfused vape pen. Unscrew the parts and use a cotton swab dipped in isopropyl Liquor to clean it. No refilling – While some vape pens permit self-refilling, mfused carts are certainly not intended to be reused or refilled by the consumer. https://leonardp507emi7.wikipowell.com/user