Please help! As I prepared to do a diaper wash, I just noticed that a bunch of pee diapers (trifolded prefolds) are looking stained from the outside in, as if they'd soaked up or reacted to something in the wetbag. I use Planetwise wetbags at home for pee diapers (poop diapers go in a pail), and the little Kushies wetbags for daycare and short outings. These diapers are all cotton prefolds, some with a microfiber layer, some just unbleached cotton, but they all stayed for a few days in the wetbags straight from daycare, which I don't usually do.
Has anyone else seen this? Is it related to the ammonia released after sitting around with no oxygen and/or contact with the wetbag material, or what? More importantly, how do I get rid of it? Before I realized how many of these I had from the same conditions, I used some bakingsoda-based anti-stain prewash treatment, and was considering bleach, but I'm hoping someone can give me some more informed suggestions!
The grey-brown color of these stains reminds me of another diaper with a stain that I have not been able to get rid of (which I always thought was a poop stain - we use a disposable liner so sometimes it's just on the edges), despite using the anti-stain treatment (which _does_ usually work on poop stains, food, etc).
I'm just going to cross my fingers and hold off on this diaper wash until I get some ideas -- thank you for any input!