I took a grunt call ZERO times to the woods, this season. I took a can, a few times. I used the can, once....and actually had a doe come to it.

"I" think the effectiveness of calls is directly proportionate to your herd dynamics. They are absolutely useless, here (grunt calls). I've never had any luck with them....and don't even take mine to the woods, anymore. I just choose not to tip them off to my presence.

BUT.....HUGE..."but"......

If the herd dynamics are different......(say....where Rob hunts).....I think they're awesome. I grunted in a nice buck up there......from 100yds away (when I first spotted him). Based on what I hear from Rob......he'd never go into the woods without his.

I don't know much about them.....but this has been my limited experience.