You guys ever done the wood ashes in their area they dust bathe? Still haven't had a problem since then. I throw in that about once every two weeks or so.
I'm just using dirt and sand in a 4x4 garden box. I was going to use ash & DE but decided against these since what I've been doing for 3 years is working w/ no ill effects. Were you the one who had trouble w/ their chicks getting respiratory problems from ash? Someone on BYC had issues so I decided to leave well enough alone in my yard. However, if ash works for you or others, go for it. We all do what we think best for our cuties, right? My Silkies like to use the middle of my backyard to dig their way to China. You can't see them in the hole - just the dust cloud rising from it LOL They're gonna miss it when I put my new garden box in that spot.