Maybe it's just me, or the size of my chicken run, but I never pick up or rake up the straw. It eventually turns into dirt. I use about 6 bales a year in a low area of my run and it never comes out. Now that being said, my run is about 4000sf and I put straw in about a 400sf area, but really, why does it need to come out? I don't rake poop out anywhere else. When that area gets mushy I just add more straw. LOL They do have plenty of area where grass and greenery grows, so maybe that is the difference.