Use the proper needle gauge and length. Use 16 ga. X 1 inch needle is used for IM injections in adult cows and bulls. Always use sharp needles - burrs take the hide, hair and debris resulting in injection site infections and abscesses. Use the proper injection site as described by the product insert.
All injections are to be administered in the neck.
B. Use lots of hot water as a rinse, dry on clean paper towels, and store in a clean dry area.