I do not want to muddy the waters here, but we could not stop the cycle of barber pole worms or liver flukes until we got the Ivomec plus and injected. 2 doses 10 days apart at 1cc per 40lbs body weight. I agree completely when guessing or rounding, do a little more. We do not milk ours, I'm sorry but I have no input as far as milk quality standards go. Good luck!