Hello all, I've been keeping ants since 2000, and recently started making Ytong (autoclaved aerated concrete) formicariums.
I'm located in Western North Carolina and love the diversity of ants here.
Here is what I have so far.
All of these have magnetic nest lids, attached vented foraging areas, feeding dishes and water chambers with 150 micron stainless steel screen(for humidity control).
*(Most so far are made for medium to large sized ants)