I think it is my area, but my flock are very prone to mites at the moment. I was thinking of putting sand on the roost shed floor ( instead of wood chips, straw etc ) as I have seen it work so well for others. I just want to know, if I do get mites again will I have to shovel all the sand out and chuck it away ( like I have had to do for straw and grass ) or do mites not get into it???