We just bought a house and it has a large chicken coop. My question is how do I prep and clean it to make sure that any birds I introduce into wont get sick, because I dont know how long its been sitting empty. ( longer than a year for sure) It has a dirt/ sand floor. I know clear the weeds and check the fencing. Thats a no brainer. It has a hot wire on it too. We have predators. My concern is disease.