I lost 2 to cocci over the summer in this old coop. I have repeatedly washed it with soap, water, new bedding per week, and a hose down often since the chickens moved out. Now there are no chickens living in it. But I will be adding two more hens to it later this month, and want to make sure there isn't cocci anymore. Yes, I know, all chickens carry some cocci in them, but I'm talking about the disease amount. Also, is there a cocci vaccination? Thank you!