They were scratching a lot. One quick look at their legs you could see it on a few. After rounding them up, the two oldest were really bad. I'm ashamed of myself, I should have never let that happen. I guess the feathered legs compound the problem, but my silkies and BCMs don't have it. I bet it came in with my original pair. Those were the two worst.
Chasing 13 d'uccle down in the middle of the day is not fun...
The inside of the coop was stripped and sprayed, aired out, then I put a dusting of DE under the bedding, put new bedding in, then dusted it and mixed it in. I have Sevin dust, but was afraid to use it in the coop