For feeding meal or "starter" dry feed to calves, the special teat feeds the pellets just like milk, Sucking action makes the calf produce greater saliva than when feeding from a bucket or trough, thus aiding digestion, calves can start on this feeder as a supplement feed from 1-2 weeks old, No waste or mess, feed is always clean and dry, supplied wall or fence hanging bracket, teat slit should be vertical for correct operation Teats also available $9.95