Drench them. This stuff was invented for a reason your bound to have breakdowns occasionally it's when you have to do it routinely there's a problem.What does people do about coccidiosis in calves? We had our tb test last week, vet took a dung sample of a calf that had watery dung. Turned out to be a reasonably high level of cocci. Our usual treatment has been to dose with tolracol those that appear to have a dirty back end or have runny dung. Just wandering how others do it, do you give it a miss and try and induce resistance? A hangover from calving indoors i know. Yes moving calving season to calf outside might help, but thats a mindset I’m not quite sure of yet.