Isopropyl alcohol and alcohol wipes are recommended to be used on the units mouthpieces but not on the exterior body of the unit. This may cause damage to the outer coating of the device. Be advised to only soak mouthpiece tips in isopropyl alcohol for no more than 15 minutes; always rinse then set to dry after. *Mouthpieces can be further disassembled and soaked in hot/warm water. It is recommended to run a session without any material as this will burn off any residuals from the alcohol.