I have yet to find corn syrup that bees like better than sugar water. I placed a jar of both on a few hives to experiment. They will drink 3 jars of sugar water to one of corn syrup. I am not a believer. My corn syrup typically solidifies in the bottom of the jar it sits there so long! Maybe someone else has had more luck!
believe or not, cane sugar is better to bees than corn syrup.