@sarahlynn1960 Sorry to be so late to reply but I couldn't find the thread... 🙁 Yes, I have called Pari several times and the reps I have spoken to were emphatic about only boiling parts. No specific answer as to why other than "that is our recommendation". I hope all of this ambiguity about how to clean nebulizer parts is clarified soon. No one wants to be using contaminated equipment.