We have 5 bantams in a tractor that is moved around our 1/2 acre yard. We also have a terrible amount of moss. I've been told to put lime on the yard to lower the acidity, then moss-killer/grass fertilizer, then re-seed the yard. Any thoughts on whether any of this would be harmful for the chickens? If so, I can treat one part of the lawn and keep the girls in a different area. But, I have no idea how long before a treated area would be "safe" for them. Help!