Define organic syrup?Well, looks like I am doing what I can do. I apologize for forgetting to mention that this is a top bar hive - but bees are bees. The syrup is in a feeder inside the back of the hive. The robbing started during a time when I was not feeding the bees - there were hardly any honey stores when I checked. So I decided to start feeding organic sugar syrup - no additives, nothing that would increase the aroma to attract robbers. The hive is still kind of small, there is a queen who looks fine. There are healthy looking larvae, capped brood, and a little honey.
We feed high fructose corn syrup it Don't change a thing. Make the entrance to 2 bees and it will have power to defend themselves. Usually it is a week hive.