I’m at a loss. Last year I had an outbreak of fleas. Treated with powdered permethrin all last summer. I’m seeing them again this year. I’ve treated twice with liquid permethrin now. Each time I’ve cleaned the coop and sprayed down. I’m seeing runny poo now. They are sneezing.. and we have leg mites. Recently bought ivermectin pour on. I’m a bit new to all these issues at once and not sure what steps to take to effectively treat all this. A bit over whelmed.