Dr Larson’s easy to use De-budding paste contains Potassium and Calcium Hydroxide which inhibits horn growth and is applied with an easy to use syringe. This high quality product was designed by a veterinarian for ease of use and effective de-budding. Calves can be treated from an early age quickly and humanely. Best results obtained when applied 1-7 days old, however may be applied up to 6 weeks old. Each syringe treats 30-40 calves.