Re: How to make prefolds white again
Perhaps the windows filter out the good sun rays that whiten the diapers... I would try putting them outside for an afternoon. It doesn't even need to be a super sunny day. And you'll have better results if you soak them in lemon juice first and wring them out... so they are damp.
For $1 at the dollar store I get a 32oz bottle of lemon juice and dilute that so it's half water. Doesn't get them super white but it should take out most stains and take care of any dingyness. GL