Project Barn Q4, Ant/Termite barrier

hi!
I am planning a Pole Barn, part of which will be with a heated concrete floor. I will be asking questions to get the consensus expertise. Please stick to the topic, I will be asking several, and could easily miss your pearl of wisdom if you start crossing threads!
thanks!
Project Barn Q4, Ant/Termite barrier
Is an Ant/Termite barrier common? (between the sill and the footer?

Like a house, just use a heavy guage plastic. However you might want to lay down a moisture barrier on the ground under the chair/rebar. This should help you keep those pesky fire ants from finding their way though any slab cracks.