I have solved the problem of ants building nests in the flowhive exactly as in the photo by smearing a paste of honey & borax on the surface of the cover - sides & back. While borax is poisonous to bees, they can’t get into the narrow spaces. Even with moats, various greases & cinnamon, I still found the ants (even different sizes) getting into the super. The bees seem to manage the ants in the brood box & in my standard lang hives, but the flowhive construction allows the ants to nest. The borax paste completely solved the issue, and does not appear to be harming the bees.
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I don’t know, hey. To me that sounds like an ideal bee death trap.
LOL I read it as the ants going down to the bees in thongs… LOL green ants stinging bees under their thong straps hahaha
Luckily I read @Vestigialamentum 's post 
On a serious note, here are all the topics on ants and getting rid of them:
https://forum.honeyflow.com/search?q=ants
e.g. 
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