Hi! This is Adriana, the beekeeper from South Mountain Bees.
After the relentless recent robbing episodes, I was able to put robbing screens and entrance reducers on all hives. After placing the screens and the reducers, I was able to feed the bees.
During the summer dearth, we feed bees sugar syrup. Once you put even a drop of sugar syrup in a hive, the robbers will start coming. Therefore, I had to make sure they were protected so that they could have a chance to fight the intruders.
Here's a Live FB video from today where I show what the screens and the reducers look like on the hives, and also how the feeder works.