I have tons of ants: tiny black ones. If I put a sugar syrup jar up onto a 3 deep hive they're up on it in minutes. They're more up to syrup then dry sugar. I never saw them on frames though, so they're pretty much harmless. They make their way on the inside of the box also up to the syrup . I really cannot fight this and let them do their thing.The biggest problem with the "Mountain Camp" method in summer is IF they eat the sugar it makes space in which they often build comb. The second problem is it brings ants... I have done open feeding of dry sugar. It still brings ants, but if it's 100 yards from the hives, it doesn't really hurt them.