Advice on strip washing nappies (that is, washing them until all existing detergent is out of them) tends to advise an optional vinegar rinse. Now, I'm not guarenteeing that I know it won't harm the machine, but vinegar is a fairly weak acid, and I've done a vinegar rinse of nappies and it doesn't seem to have harmed mine.
no subject
Date: 2011-03-17 09:44 pm (UTC)