Direct bargaining—“I’ll give you this if you do that”—can be useful in a negotiation, but it’s also something to be cautious about. Wheeler told a possibly apocryphal anecdote about Richard Nixon and Henry Kissinger in which Kissinger watched Nixon use a treat to coax his Irish setter off a chair in the Oval Office. Kissinger supposedly told Nixon that the lesson the dog had learned was not that he should stay off the chair—but rather that if he got on the chair, he’d get a treat for getting off it. (In some tellings, the problem behavior was chewing the rug.)
but be careful as it doesn't have intrinsic motivation