We are heading into fly season over here in Aus so reviving this old thread for those of us just starting our battle with the flies.
I was surprised to read about the hay because this is my first year putting it in my run and my first year with flies constantly hovering and swarming round in the run. Guess what's going in the compost today - sigh
I'd moved to hay because the shavings take so long to compost I hate putting in them in my compost pile and I hate wasting all that chicken poop fertiliser. So much for that idea it seems.