We castrate a few weeks after weaning when we have the vet out for preg checking. That has given us enough time to evaluate the bull calves now that we've have collected weaning data on them and make our decisions on which ones to keep intact to develop as bulls to sell and which ones need to be cut and sent to the feedlot. Never have used bands, our vet will cut and disinfect and never have had any infection problems with him. And while I'm not a big fan of them, dad saves the nuts to fry up some rocky mountain oysters.