I didnt buy the MAD Growl but i bought the Primos Roar (same type of call) and it has made me a believer.

I bought it right before rifle season and didnt bother using it at first. Then,duringeveninghunt over a food plotI heard what sounded like a lion roaring behind my stand in cedar thicket.I recognized it as the very aggressive roar/growl from the instructional video w/ the call. It made my heart stop and then buck fever set in like never before. And to think i hadnt even seenthe buck. The buck/s made the call several more times. I got out the call and called a few times. Nothing happened except a bobcat came into the field spooking the does, turkeys, and every squirrel for a mile. Evening over! I did come back to the cabin and reviewed the video. The sound i heard was indeed the buck roar. Unbelievable!!

Next Day: I setup my favorite rut stand. Its in a funnel created by several steep ditches running off the top of a ridge filled with cedars and plenty of bedding cover. The deer tend to bed to the west and a food plot is located to the east. 8 o'clock came and nothing happened. I decided to get out the buck roar. I made a few soft grunts. threw in a few doe bleats and mixed in a a couple timely roars. No sooner than i put down the call and picked up gun, I watched a 2 1/2 seven pter walk out of the bedding area searching for the sounds. He circled downwind trying to find the action but realized he made a mistake he slowly made his way back whre he came from. The second time I had used the call and it had worked like a charm. he wasnt a shooter but maybe next year.