We inherited a coop when we bought our house. Coop has been abandoned for 5+ years, but is in good shape other than was dirty when we found it. I cleaned out everything loose, swept and scraped. Do I need to have this coop disinfected/sanitized? I'm afraid that if I do any more scraping I'll damage the wood (plywood floor), since the poop nearest the floor is basically cement now. How clean is clean enough? Can parasites live that long in an abandoned coop? I am in upstate NY.