If you practice with it you can master the call imagine a deer grunting while digging or making a scrap his hooves hitting the ground uuhg uuhg uhg pause uhgg uhgg uhg and then a longer uuuuuhg not to loud as every one i have herd try this after learning works in december for mule deer. in January you want to do a bit softer uhg uuuuhg uuuuuhgowa sound works ok . during the peek of the rut a calln will stop a buck on a dime or you can grunt with your mouth as that will stop them as well . best of luck ( chief whitetail hunter)