@potterksp @kate2025 There is no need to do both. Boiling or using the baby bottle sterilizer are 2 different methods of sterilizing. I keep 2 sets of nebulizer cups and in the morning after I neb, I rinse my nebulizer parts and let them dry. In the afternoon after I do my 2nd nebulizer, I rinse those parts and then soak everything in warm water with clear dishwashing liquid for 5 minutes. Then I rinse everything well, shake off the water and put everything in the sterilizer/dryer. In the morning, I unload the sterilizer and repeat the process.