Beets are sweet and ants like sweets. A couple of ants aren’t worth reacting to butm, if it seems that they are hariming the beets then I’d sprinkle some diatomaceous earth around the beets . Diatomaceous earth is the sharp skeletons of diatoms. There are very small and sharp (on a microscopic level) and will slice the ants if they attempt to go near the beets. All safe for you thugh I’d wast the beets before eating them. I’m sure you do that anyway. Peter B