Hi all! I love this site, have read SO much on here, and decided to finally create an account... especially because I am a new chicken mom to four 5 week old babes. I have a coop and run but am battling a dirt issue with the run floor. I live in sunny (and hot and humid) south Florida so "mud" isn't a big issue, but the dirt still gets pretty... dirty ()... and it bothers me having their little feet all black from it. I also read that dirt, specifically mud, can harbor diseases. I have read countless positive reviews about sand in the run, but I continuously have issues trying to figure out exactly WHICH TYPE to use. Living in the concrete jungle I do, there are really only two choices of places to buy sand--you guessed it: Home Depot and Lowes. I can only find play sand (too fine!), multi-purpose (medium coarse), and pavers sand (the most coarse; it does NOT harden aka no additive to turn it into concrete). I can't tell if any of these are "natural," but they do all, of course, have the silica disclaimer. But people swear by sand and say they've never had issues with it. Does anyone have ANY idea on which one I should choose out of the two (multipurpose or paver)? ANY helpful insight is appreciated. Thank you!!