I cleaned out my coop yesterday with the help of my 4-yr-old daughter. She stood outside the coop while I shoveled shavings into a wheel-barrow. Afterwards, her legs were COVERED in some kind of bug bites. I got none. Now that I think about it though I was wearing rubber boots and she was in flip flops... Anyway, I'm assuming mites or fleas?? I put Seven & DE in with the shavings in the coop, but she was outside the coop. Perhaps these bugs are living in the dirt around it? I have dogs that are not treated for and do not have fleas so I don't think there are fleas in my yard, but my dogs aren't near the coop. Thoughts? Suggestions?