I don't know why I have any faith at all in a grunt call-- had one excellent response a few years ago but not much positive I can clearly connect to grunting since. I keep at it, trying new ones looking for the right sound. I have a drawer full of them. So far the old Woodswise "Buc n Doe" sounds best to me-- I have several (you know, in case I lose one in the woods) but only one of them has the right pitch. Looking for a younger, less intimidating sound. The deep grunt makes a lot of deer run off. More like a "quack" is what I am thinking.
And rattling? Around here, forgetaboutit....