Ok, well that's proof enough for me! They're on a cold wash as I type!

Now my only other concern is drying when it rains - the sun is fantastic at bleaching stains and I know it's doing a good job of killing germs... but what about drying them undercover when it's raining? We don't have a dryer and in all the info I've read, the nappies are dried in dryers in winter. Do you think I should wash them in hot if they won't be dried in the sun? (not really an issue for the next 6 months or so, I imagine, but I like to be prepared!)