Seeing your set-up, I'm at a loss as to why it's stinking or drawing flies. You don't seem to have anything that would cause those problems. The little bits of food left from feeding fresh veggies shouldn't draw flies or stink. I don't have a feeding area, I throw stuff right over the pasture fence and there it lies until it decays unless the chickens eat it. And we're not talking a few greens, we're talking all the food waste from our house as well as all the too-large zucchini, watermelons that aren't developing well, diseased tomatoes, the scraps from processing tomatoes and pears and apples from canning, etc. I don't even put those things in a pile, I literally fling the stuff from the "chicken bowl" over the fence. We also have BIG compost bins near the chicken house that are filled with the dirty shavings, chicken poo, and the weeds I pull. We don't get fly problems very often. When we do, I put out dishes of a product called Golden Malrin, which will attract and kill flies. It is very toxic, and not organic in the slightest, but it does the job. You just have to find a place to put it out that the chickens and any dogs, cats, etc. won't get into it. Something with holes big enough for flies to get into but not other creatures works well, like a coffee can with 1/2" holes cut in the lid.
The other thing you could try is a product called Sweet PDZ or Stall Dry or another ammonia control product. It does a great job of getting rid of animal odors. Mix that in to the shavings in your problem area.
I just don't see how your set-up would stink if it's not getting wet.
How do you plan to get seeds to germinate if you aren't going to wet the area? Also, I think getting seeds to germinate there will be an exercise in futility. Those hens will first scratch out the seeds, then eat any baby plants from the seeds they missed.
The other thing you could try is a product called Sweet PDZ or Stall Dry or another ammonia control product. It does a great job of getting rid of animal odors. Mix that in to the shavings in your problem area.
I just don't see how your set-up would stink if it's not getting wet.
How do you plan to get seeds to germinate if you aren't going to wet the area? Also, I think getting seeds to germinate there will be an exercise in futility. Those hens will first scratch out the seeds, then eat any baby plants from the seeds they missed.