I bought a couple of these this year, glad I did. The bees drain them completely dry and there are not bees in the top unless I forget and leave the stick in there stuck to the top cover and let them in.

So far no comb on the bottom, and they are sucking down a gallon or so a day of 1:1!

No dead bees, bone dry and clean when the bees get all the syrup out.

I made my own boxes, they are a bit shallower than a standard shallow so you will have to cut one down or make your own box if you don't buy the one from Kelley's. Might work with a shallow, but the feeder is then an inch or so from the top of the frames in the box below.