flooring outside of coop, in the run

[MIKEY7]

i built a 12 x 7 ft area over and around my lil coop. it is all in the dirt and was wondering if i need to add anything to the dirt seeing they are eating it away. i know thats what they do but what or if anything should i do

 

[Clems Girls]

I left a comment on ur introduction thread about woodchips