When I told chicken farmers of my procedure they laughed themselves to death.
My set up is a rubbermaind type shed 7 x 3 with shelves inside. I line every box, every roosting shelf with hay. Every day I put on a rubber glove and go poop picking taking hay/poop clumps and put them either in compost or garbage. This leaves the coop itself poop free.
The run is half cement sidewalk and half dirt. In the summer I hose off the cement. If need be, I'll throw some DE down. When we had horses and a barn, we'd often use agricultural lime to keep smell down in the barn, but I haven't had to do that yet.
My coop/run area is about forty feet long by nine feet wide btw.
I currently have six hens. Cleaning takes me less than five minutes a day. Were I to hose, like in the warmer weather, double that to ten minutes.
Most of the smell is kept at bay. Nice sweet smelling, fresh and green alfalfa hay adds a lovely aroma and they'll eat some too. I've also used wood shavings with great success for odor.
In the summer, on the hottest of days, before I clean there can be a slight smell. I let the girls into the lawn area and I use air freshener spray, clean and spray again. This gets it good. I've hung the yellow pine tree fresheners to help with smell as well as flies. It's just a matter of keeping it really clean, and then using flytraps as flies are also frowned upon by neighbors.
So far, so good, no complaints which is a good thing, since I live in NYC and have lots of neighbors.