I can't find the answer to this question anywhere, my google skills suck.
How many uses do you generally get out of the "outer shell" of the mcn before needing to wash?
I'm thinking of purchasing 15, each with an insert and then 10 extra inserts. But I'm wondering if it works out better with more inserts than shells, eg 10 shells with 20 or 30 inserts etc?
Using probably just in the day time, at home, combined with disposables and a few old style terry cloth to see what suits best. If I like them I'll purchase them for full time use but really just after enough to see if they get the job done.