I've got one cow that has been rubbing. Started just before she calved, needed to get them up, hard delivery, and ivomec'd her then. I turned her out a few days later and went back to rubbing? She's the only one on the place that's doing it that bad, and it's been a couple weeks. I've been reluctant to turn her out with the main bunch, I've got her running with the young bull and her calf. I may try to retreat her.