My cows are looking pretty shabby. They are scratching on everything they can. We are just about to start calving any day and didn't know if I should try to treat them or wait until the calves are dropped. Any suggestions? I've tried to included a pic of one that is looking shabby but it appears to be a no go. Anyway they are missing hair in patches. Some of the cows are missing more than others and some are missing none, but it appears to be on most.