A couple of years ago I tried quite a few different bags of premixed deer food/attractants. I would dump a small pile of each in front of a camera, sometimes 3 or 4 different types in their own piles in front of a camera. That Rack Stacker Fixation was always the first to get eaten. I wish now, I could remember the other brands tried, but I only remember the one they ate first. Fixation. I have noticed over the years they will hit certain brands of mineral better than others as well. I almost always used that red "Blaze" mineral now. They love it. Not trying to promote Rack stacker stuff, just my personal experience has shown me it works.
There used to be another mineral I bought years ago, it came in a block called 4x4. It was red in color and notched so it could be split easily into 4 parts. (assuming that's where the 4x4 name came from) I can't ever find it now, but the deer around here loved that one too.