Same as cmi and becleartoday, I sanitize my husband Bruce's two Aerobika's daily with a 15 minute soak in very hot water and Seventh Generation dish soap, followed by 10 minutes in boiling, distilled water. Have not been comfortable using either dishwasher or microwave, both of which are more than a decade old and at the end of their appliance lifespans. Also do the alcohol bath once a week and wipe down the neb with alcohol daily. Lots of sanitizing and disinfecting but husband's MAC sputum levels are pretty high so the extra effort seems worth it.
Bruce is on his second set of Aerobika's. After 6 months of daily use at number 5, the resistance began to loosen.