have you taken the dead chicken to the votech vet to see why it died, mine had mites but you could see it right away as the legs show scales on them and I clean them with vasaline at night and it kills the mites and the scales full off my girl picked it off after a whileYeah, they are getting everywhere. He wasn't a big rooster though he was a small bantam roo. But one of my bigger hens is acting just like my rooster was before he died. I really hope she doesn't die too. I will try to buy that stuff today and clean out everything.