willow - I had a nappy go mouldy as I accidentially dropped it behind the washing machine, when the machine machine was leaking (I didn't realise at the time it was leaking). The only way I got rid of it was the sun, I think I had to leave it on the line for a few days. Are you having sunny days ATM where you are?
Sorry, that's all I can suggest.

Well DH couldn't find the nappies tonight when he was putting Nina to bed and I was in the shower, so she's in a sposie. We'll have to try tomorrow night with the layering and see if we can prevent leakage.