Cleaning in hot water with a few drops of washing up liquid, then rinse thoroughly with hot water and dry thoroughly. Dry really well until the next use 4-5 hours to allow germs to avoid by residual moisture. Attention! not all parts can be boiled or sterilized in the microwave. With more people use after cleansing rapid sterilization in alcohol bath is done.
Another tip, if the fumigation should suspend once, just once blow strongly from the top of the membrane. Usually a water drop of a nebulization is there prevented. Has always worked for me immediately.
So far very pleased, wait and see how the device behaves over prolonged use. From me far an absolute buy recommendation.