I picked up a few hens and roosters from this gal. Well they have scaly leg mites. I want to give them Ivomec (ivermectin) the book by Gail Damerow says 5-7 drops for bantams and 1/4 cc for standard. That seems like a lot to me (powerful stuff.) I have them quarantined. Don't want my other birds getting it. So how much do I give them. Has anyone else used this before? I also put mineral oil on there legs to help suffocate the mites.