I hate grunting, usually a result of too much cheese or just meat in my diet. Happens every year when arriving at elk camp, like a bear's plug you find in the spring. Wait that isn't what your asking...scratch that sorry!

As a rule I don't blind call for deer unless rattling. I call inbetween the 15-20 min intervals between the rattling sequences.Waiting for long periods can also be a mistake as the deermight hear the offering but lose the pinpoint, I'd say try grunting/calling every 15-20 minutestoprevent this happening. Just don't stack call and you should be fine.

Good luck