There are cleaning instructions with both the machines and the masks. I believe (I'm brand new to mine) the recommendations are mild soap and/or a vineagar solution. I think its soap for the mask and vinegar solution for the hoses. I haven't had mine a week yet so I haven't washed them yet. Several people said they wash theirs in the shower and that may be what I do with mine since my bedroom is upstairs and my kitchen sink which would be best for cleaning is downstairs.