I believe that in most states you will find such a call is not legal for use in hunting of game animals. Certainly isn't here in Bama. I have a VERY OLD grunt call that has called in more deer than I care to recall. Was instumental in my killing of my first bow killed buck and also my biggest rifle buck to date as well as many others some killed some not. I own a bunch of grunt calls and this is the ONLY one that has ever brought a deer to me.
GB