A technique that, I have used with success, is dropping 4 or 5 drops of lavender,rosemary,chamomile, or some other healthy[not cedar or cinnamon] essential oil, into the oil chamber.Run the unit at 3 or 4 fan setting[340 degrees F] and partially fill balloons and hoses with this essential oil vapor.It removes the dank scent from bags and hoses, and makes equipment smell nice.The Vapir Rise has a lot of screens and things to clog, so after I remove the screens and wipe with ISO and brush out the crud by the wip adapter.I then smear a tiny bit of rubber, silicone, friendly grease.[made for lubing flashlight seals] on the O rings that seal the top unit.