Hardware cloth around the perimeter...

[LaurelC]

Keep an eye on the pavers - maybe I'm just lucky, but every ant in the state thought under *my* pavers was a great place to build a nest. YMMV...

Basically built-in chicken feeders!

 

[Cacique500]

I wish mine would eat ants...no luck!

 

[tdepointe]

My hens love ants. On hot days like we have been having they often do not eat the vegetable/fruit scraps I put out until it cools off at the end of the day but the will go after the ants it attracts anytime.