We will be receiving 10 pullets soon. Our chicken run was just recently used for 4 to 8 hens over the last 5 years or so. The run is "dead"; no worms, no grass, no weeds. I dug and turned over the soil. When the pullets are old enough (and we catch the fox and get the electric dog (aka: mass murderer) collar working again! ....) we will be letting the new 10 pullets roam the woods and field most of the day. 1) So - my question is: do I leave the run alone - try to restore it to a healthy PH? Do I throw sand and DE down? Will baby chicks be okay in an old run? Thanks!!