Slows down the reed and gives it that "clicky" texture to the grunt? That's what I figured it was for. Kinda late for this year but I may have to try one.
Here's a Nice Buck that I called in last week using our Deer Grunt and Hot Nanny Bleat Can.The Rut is picking up here in Mississippi always had good luck during our Primitive Weapon Season. Good luck to everyone hunting over the Holidays.