@jeanarizona...It may seem odd that I wash my equipment in dish soap and water and have done so for 10 years without a recurrence of MAC or an exacerbation. My home environment is not as clean as most, since I live on a farm with an organic garden and have two cats. I do sterilize my C-PAP every day. I have never found it necessary to sterilize my nebulizer. The nebulizer fluids, mucinex, and postural drainage every day without fail have kept me free of infection for 10 years. If your equipment is plastic, I would suggest washing it daily or putting it in a so-clean type ozone sterilizer which will not melt it. Sterilizing may be necessary if you are a healthcare professional or live with little children who constantly expose you to germs.