I have been using cloth nappies for the past couple of months and lately they have become a bit stained. I know the sun drying is suppose to fade stains but I live in NZ where a sunny day is a rare commodity at the moment and so they are usually hung by the fire to dry.

Will I hurt my nappies (ittibittis) if I give them a soak in Napisan to get them back to white ?

Also, just wondering why old school cloth nappies had to be soaked? My MIL just about had kittens when I didn't soak a poo nappy and then went to put it straight in her washing machine lol