Depending on where you live may play a part in the better options concerning winter feeding. Mountian Camp is used by some in my area as a emergency feed. Along with the feeders shown above. I do not know if the rapid feeder will work in Kansas as most likely y?all have really cold rigid winters? From what I understand, in order for bees to take advantage of the rapid feeder, they must break cluster and climb up and over the entrance tunnel just to reach the feed as opposed to Mountian camp which is placed directly on top of the frames laid on newspaper. I am no expert on this and do not wish to give bad information. I would like to see others here, with similar weather conditions as your own chime in. I watched a video concerning emergency, or supplement feed, where the bees can easily access the feed mixture described in the video. This fellow Langford, at Woolie bees, mixes 4 pounds of sugar with 1 cup of ultra bee per 5 frame nuc. Live Oak also posted a mixture here at beemaster, which has more products in the mix, as per Kent Williams recipe. Again your colder climate would be a consideration. Possibly for each of these methods?
Phillip
Let me add, Lankford said the bees seem to prefer or will sometimes eat the mixture before they eat the honey stores.