Right now they are using mostly just social calls so grunting on most occasions wont work. It can but not usually. Fawn calls seem to work all the time for does like mentionedbut again right now there probably wont be a buck tailing her. I have called in does with fawn calls and a few bucks with grunts but much later on in the season and not all that many. But on the other hand I have used them quite a bit (or my mouth) to stop deer to get a better idea of what size they are. Good luck.