Traditions Basic Beef Mineral is a free-choice mineral for beef cattle. Formulated with supplemental levels of vitamins A, D, E, and selenium. This supplement is designed to meet the daily nutrition requirements for health and reproduction. Contains Diflubenzuron Insect Growth Regulator – for continuous feeding to beef and dairy cattle through the fly season to prevent the emergence of house flies, stable flies, and horn flies from the manure of treated cattle.