I've seen so many recomendations for hanging the feeders and/or waterers off the ground, on a chain or rope etc. The reason always seems to keep the chickens from pooping in it. OK, I understand that. what I dont understand is, Why is hanging it from the ceiling better than placing it up on a pedestal, stand, blocks, etc. ??? it would still be off the ground, and out of pooping range, so why is it that everyone recommends "Hanging", as opposed to just "Off the Ground level" ???