I use the tube type grunter I bought when they first came out it has an ajustable
O-ring for deeper tone or for a doe bleat.I also have two calls one for a buck and one for a doe you can put in your mouth and be hands free.I tried the can call this year with out any success.I have called in a few deer with the grunt tube and finished it with the call I put in my mouth.It all depends on the bucks mood. I have used them and a buck would not respond.I relate deer calling to turkey calling when they are ready they will respond.