Used it this year & the product did seem to work really well, it is pricey but I would cut 5lbs of the Big n J's into 50lbs of shelled corn. I put it in an established corn pile set and had farm more deer coming into the site once I put the Big & J's in....don't know if it was because the site was already established and more were exposed or if the really strong aroma that it does have was drawing deer in.
It is almost like a mineral lick mixed with corn supplement though, the deer will paw and dig/lick the ground where it was at long after the supplement is gone. So dependent upon how the mineral lick issue goes here in IA this product might not work for our regs.
Good luck.