I will admit that I do use corn and I will also submit my experience with it over the past 5 years... about 8 times out of 10, the deer will pass by the corn. I only use it when there are no crops on the fields. This year, there was nothing planted on the field and the Red Oaks and the White Oaks both produced acorns, so, there is still plenty of "natural" food for them.
White Oaks produce every year, Red Oaks produce every two years, this year was the production year for the Red Oak, next year, the acorn production will half of what it was this year, so, find some White Oaks to hunt next year.
As for liquid baits, I use Buck Jam Apple, and have been using it for a few years. I have witnessed deer eating stumps to the ground and then eating the dirt to get this stuff, Buck Jam works, corn not so much. I have a cedar stump right now that the deer are trying to uproot from the Buck Jam I put on it about 3 weeks ago.
Example:
Buck Jam Apple - Bass Pro