We have an old quail coop that has been used for storage for the last 8yrs. I would like to make use of this building for my chickens next year. So my concerns are is there any danger of disease being left over from the quail after 8 yrs? Plus their is quite a lot of mold/mildew from the chicken wire being covered with plastic. How can I get rid of mold and will this harm my hens? Plus we need to work on making sure there is better drainage of run off water. We are reworking the ditch to direct the runoff water away from the building. But I was wanting to know if I could use peagravel instead of wood shavings for litter?