I just retagged this question, changing "clean" to "washing." I think we should keep the distinction that clothes are washed, equipment is cleaned, and (preemptively) only things that need to be sanitized should be tagged "sanitizing."
I think your guidelines are great; assuming there are no objections from anyone else, you should fill out the tag wikis.
Another point of discussion: I would love love love if we used consistent verb forms for tags. I think gerunds (-ing) make the most sense for US users, but am curious if non-native English speakers will find that intuitive enough. (But assuming we went with that convention, the "clean" tag should be "cleaning.")