For myself, I've been wondering what way to do this for some time. Not necessarily for Leaf Cutters but for any ant. For instance in the warmer days I'd remove the lid of the Casita set up and stand it in a bowl of water. The ants would have a lovely time running around on the outside of the tank, poking their "noses" into everything that was there.
Anyone use a more professional type of moat?
I haven't read about this subject anywhere!
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