I have some Ivermectin that the vet gave me to treat a dog I was fostering with mange. It's in a bottle and I would pull some out and drip it on her food. I have some left and would like to treat my standard Cochin roo who has mites and lice. I have tried everything on him DE, sevin, poultry dust...with no luck. I assume I would place it behind his neck but I wonder how much to use. Th vial is not marked but the dose I gave the dog was 0.3ml once a daily. Any ideas?