The caffeinated bees visit the target-scented flowers more quickly and often than those without that extra boost. And previous studies had shown that bees like to visit artificial flowers that produce caffeine, Arnold notes—but how the caffeine itself might impact bees’ actions was unclear. Another received plain sugar water and the odor, and yet another got just the plain sugar water. All of the fake flowers contained reservoirs of sugar water (without caffeine) for the bees to lap up upon selection. The caffeinated bees showed a clear preference for the faux strawberry flowers, with 70.4 of them visiting the target blossoms right away.