I have had chickens for a long long time and have always had them on dirt in the run. My parents own a deli so my birds get all the food scraps that get thrown away from the deli. I never needed to buy grit for my birds because they have always been able to find their own. After doing some research and following some people on youtube I have decided to cover my run in wood chips. I brought the wood chips into the coop on Sunday. I left a small corner uncovered to when the dirt dries out they can dust bathe. Now my question is am I going to need to supply grit or are they gonna be able to find their own through the wood chips. Does anyone else here use wood chips in their runs?