I have a very small and weak hive (only 5 frames drawn) that has undergone two bouts of robbing in three days. The first one was minor, and I solved it with a wet sheet, and removed the frame feeder I had placed in there a day earlier. Things were fine for a day, then the robbers hit again. The second was far worse. I decided to close the hive down for three days and see if I can make them go away.
I've screened the top entrance and closed up the lower entrance. I have a screened bottom board, so I don't think ventilation will be a problem. The hive is in the shade of a large umbrella during the hottest part of the day. I have two feeders inside the hive (placed back in after the second robbing bout started), one with syrup, and one with water. I've verified that the bees use them, so I don't think food/H2O will be a problem either.
This evening when I cracked the lid to see if the bees needed more water/syrup, a literal horde of bees swarmed out of the hive -- like a horror movie --, and immediately began buzzing around the hive and trying to get in via any crack and seam they could find. I would estimate that maybe a third of bees in the hive were trapped robbers.
My question for you is, is there anything else I should be doing? Should I remove the feeder with the syrup in it? There's a little honey, but I'm not sure how much honey the bees will need for three days. I have no other hives to draw stores and brood from.
Another question, there are a lot of bees clinging to the underside of the screened bottom board. They're calm. Are these my bees that want to get back in?
Frankly, I'm not optimistic. It's a weak hive, honey stocks look a little low, I'm not sure about pollen, I'm definitely short of bees, and I'm not sure I even have a queen anymore. To make it worse, I'm as green as can be.