Chickengene
Songster
Can't you sprinkle DE over the straw in the coop to eliminate or reduce mites?Ditto Dat^^^...(and corn info)
Straw can possibly harbor mites if you already have them,
and can possibly introduce mites to your coop if straw/hay has been stored in a barn where wild birds and rodents have access,
But it is not automatic that all straw and/or hay has mites in it.