I would like to know how its used.
Is it a cover over prefold/fitted?
Of late I've been using wool exclusively on my dd. I knit and crochet, so all her covers are custom made!

I scour the net for freebies and also buy the patterns for those that get great reviews or those that I like the look of! My favourite is the TinyBirds Longies posted above!

I used exclusively fitted diapers, so what I do with my dd is put on her diaper and then either a soaker & clothes, shorties, or longies or a skirty!

and she is set for the day. I change her as soon as I think she is wet or poopy and then reuse the same outfit if it isn't damp, stinky or soiled.... if it is then I leave it to dry and then use a new cover!
Someone said you don't have to wash it very often but that seems strange to me.
As mentioned above if you air between uses the can stay un-stinky for a long time... - I currently only wash for soiling, or stinkyness.
If you've got more question post away!
Grumpy! (who loves wool!)