Easy to use De-Horning Paste. Contains potassium hydroxide and calcium hydroxide Inhibits horn growth before it starts Plastic dial-a-dose syringe with wide tip for accurate application For professional use only Dr Larson’s easy to use de-horning paste contains Potassium and Calcium Hydroxide which inhibits horn growth and is applied with an easy to use syringe. This high quality product is designed by a veterinarian in the USA for ease of use and effective de-horning (budding). Calves can be dehorned from an early age quickly and humanely. Best results obtained when applied 1-7 days old, however may be applied up to 8 weeks old. Each syringe treats 30-40 calves.