Is there a time when the manure is less useful for the garden? i.e Can it be too old and broken down?
I have just picked up what seems to be great stuff, fluffy, almost peat like, but still moist, no smells etc. however no worms. In other areas of the enormous pile you could tell it was still breaking down and there were plenty of worms.
Is there a manure law of diminishing returns!?

Thanks,
Stv