I used deep litter in the run during the New England winter. It worked really well. Now that it is warming up, I'm wondering if this approach is feasible for summer or whether the run will be overwhelmed with flies. I rake and turn it every day. So, my experience is limited only to cold weather and I'm clueless about what to expect in summer. If anyone has experience, tips or advice I would like to hear. Again, the deep litter is just in the run which is not covered. 5 hens, 12x4 feet.