For those of you who use Ivermectin pour on for lice / mites on your chickens can it be used on 10 week old silkie chicks? I know there's plenty of info regarding this product, but I find some of the info confusing! Sorry to be asking about this... Could someone please clarify instructions for me, I've never used this before. I have 10 week old Silkies, 15 week old polish, 4 yr old red sex links, 1 yr old ameraucana, 6 mnth old black sex links & easter eggers. Thank you in advance! Appreciate your help!