I agree completely.

Handwashing, of course, won't do diddley for lice/ticks/mites/lazy brothers-in-law, and other parasites.

I regret any suggestion on my part that it would. I should've included that disclaimer in my post.

I'm just hyper-aware about handwashing because of the environment I work in (hospital) and know how easy it is to forget to do something so simple and the drastic consequences of not doing so.

Thanks for pointing that out to me.