I know there have been a lot of posts about sand but I'm so confused and I'm hoping that this one post will clear things up. I want to use sand on the floor of my coop. I am so confused about what sand to use. Am I correct in thinking that sand with silica in it is absolutely not ok for the chickens? I've read that play sand is ok. I've read that play sand is not ok. I've read the same two things about construction sand. I bought Sakrete Play Sand because someone on the forum said they use it but on the back it says it can cause breathing problems with long exposure because of crystaline silica. Help, please. I want to do things right for my little chickies. Thanks!