My parents offered us their old chicken coop & I'm wondering if it's safe to use for our chickens? How should we clean/disinfect the coop for new birds? It's a large coop-9x10x7 high & it's all insulated. My parents built it and only used it a year and a half. There haven't been any chickens in the coop since 2012. They never had any sick birds & cleaned it weekly. We are considering taking it since we would only have to pay to have the coop moved (around $200) so it would save us a lot of start up money & we would have room for more chickens in the future. Is this a good idea?