A really kind person has just given me a big supply of motherease one-size nappies - only trouble is that they're almost beige with age and washing with coloureds. They look more like floor cloths than tea towels, if you see what I mean.
What can I do to make them whiter, without wrecking the fabric? (and, ideally, the environment, though since I'll only do this once perhaps that's not quite so important)
Any ideas/suggestions??