Pogonomyrmex harvester ants dump scraps outside their nests.
For scavengers, this can be a lucrative place to visit for a meal. Tenebrionidae are frequent visitors. During our trip to TX this past summer, Blapstinus were very diverse and abundant around Pogonomyrmex nest entrances at night.
Blapstinus just eat trash so they’re a benign existence, but nonetheless are not welcome in the eyes of the ants.