My husband and I are are renovating an old well house into a chicken coop...it's about 10x10, will have an enclosed run for daytime while we're at work and when we're with the chickens, they'll have access to an outdoor run and our backyard. This building has been un-used for a loooooong time and it has a dirt floor. Is there anything we can use to clean and disinfect it before the chicks go in it? I'll be using pine shavings for bedding. I wish there was something I could put on top of the dirt, but I imagine it will be cool for them in the summer. Also, what's the deal with DE? Where do you put that? Is that for a dust bath? Sorry for so many questions...I'm a total newbie. Thank you!!