OK, so I have had my chickens for 1 week, and the flies are here. I use my garden tiller on the run at night, and then put a fresh layer of leaves in after they've gone in the coop for the night. My local TSC has Sweet PDZ. Does this have DE in it? Does it help with flies? Would I use it everyday? How much? Would I sprinkle it in before I till everything under, or on top of the fresh leaves? Will it hurt the chickens if they ingest it? Geez, could I ask a few more questions? I did get a fly trap, which already has quite a few flies in it, but it really stinks. I know with the colder weather coming, they won't be as bad, but I'd like to find something that works pronto! Thanks!