Robolepa [0] wrote to me and said:
My grandmother was an Italian immigrant. When she would hang the laundry out to dry she would only hang up the darks. The whites she would lay on the grass in the sun. She said the sun shining on the grass released oxygen, which in turn removed stains. Her whites were always whiter than white, and you can't argue with her reasoning. Have you ever heard of this before?
No, I haven't heard of that before! I would be afraid that my grass isn't clean enough, but maybe this summer when the lawn is thick (and it hasn't been freshly mowed!) I'll try it on my cloth diapers. :)