hi , I saw recently on a show where the outdoor chicken runs had straw / hay in them . I have thought about using them in my runs . my runs tend to get wet with the heavy rain we have been getting ,, My husband and i just put a lot of sand in the runs so hopefully we will have no more problems with flooding . Also my husband just recently covered the roofs in metal so now they are even more protected from the weather . Has anyone ever used hay in their runs ?? If so what are the advantages and disadvantages ?? Thanks !!