Hi Liz
I have only had them for about 2 weeks I think. I don't use them all the time, mainly only at night and if Shelby is going to be home with her dad all day. (he still doesn't get the hang of terry flats after 16 months) I don't use much powder, but do use a bit because I wash her flats in the same wash. I was wondering if you could do a soak of water and a tad of vineger? But I would want to do it with every nappy all the time. Maybe I should just stop smelling them.