I went and checked on a couple of 3 deep hives after church today. Both bottom boxes were vacated, just bees walking around on the comb. Lots of bees. Top 2 boxes seemed fine, some brood, some eggs, nothing to brag about, kinda lite on stores. Were they just bees being bees and moved up as their winter numbers dwindled. Those bottom brood boxes did have a lot of old black comb in them. I don't use upper entrances. I use SBB's. I used OA vapor to treat for mites back in Aug/Sept. I kept them fed during our end of summer/fall dearth. I pulled the bottom boxes and will probably trash most of the comb. Interestingly, I saw no SHB or moths.