I tried open feeding and killed thousands of bees. I used Boardman feeders until so many forum members told horror stories of the entry feeders initiating robbing. I tried external top feeders and two different internal top feeders and they only drowned hundreds of bees. I ordered some plastic bucket feeders that set over the hole in the interior cover and these leaked syrup through the hive and the SBBs onto the ground, and that summoned bees from many places. I put three zip-loc baggies in three nucs last Friday, and by Monday one hive had drowned a couple or three hundred bees in one of the bags, but the other two bags worked perfectly. My conclusion is that my syrup feeding had provided the remaining bees more stores to eat. If you have some stores in the hive and kill one-half of the bees, the remaining bees have twice as much feed. I am going to solid feed using sugar in a Mountain Camp or a candy form. Does anyone have any ideas on how to to do the candy. It's moments like this that purchasing honey looks very easy and inexpensive. I wish I wasn't so damn hard headed.