Grunted in a buck once across three hundred and fifty yards across a field , brought him within feet of where i was hiding ....he was itching for a fight ! Best result i have had is with what some call a native deer call , it's about three inchs long , ( Make my own now ) , two pieces of wood with the center curved out to allow for the rubber band that goes through the area to vibrate , then a another rubber band to hold the two together ...have called in more deer with this then any commercial deer call , even called in some mule deer does years ago with it .Cheap , used Birch or any hard wood to make the pieces , onlt about half a inch thick by half a inch wide by three inchs long , fits right into the mouth so you can walk and bleat at the same time , the tension of the rubber band can be tightened or loosened to tune the sound from a fawn to a more deeper doe call .............works for me