Hi! My family has inherited a chicken coop that was built by the original owner of our house (circa 1984). I'm very interested in rehabbing it, as it seems to be a less expensive option than building new. So my question is: What is my risk of exposing new chickens to disease that is laying dormant either in the soil or in the coop itself? I have no information about what kind of chickens were raised here or what their fate was. Also, is there some method for disinfecting an area for the introduction of new birds, I'd really like to avoid chemicals if at all possible. Thanks so much!