Bait is such a negative word... I like attractant better.

Tink's 69 is an attractant
The can calls, grunts, etc are an attractant
Rattling with antlers is an attractant
Hunting near a scrape during the rut is using the scrape as an attractant
Making mock scrapes is an attractant
Hunting near a dropping oak is hunting near an attractant
A corn or soybean field is an attractant
A lush green food plot is an attractant

The above are all legal,

A pile of corn is an attractant (but is illegal to hunt over unless you are at least 100 yards away and its out of sight)

Hard to rationalize the difference in the last one and the above incomplete list of attractants widely used by hunters, and if you carefully look at the intent, you will realize that the word 'attractant' could easily be replaced by the word 'bait' on all of them.