I have heard a few people mentioning that their Pogonomyrmex go crazy over kentucky blue grass seeds (hard to find without chemicals though). Even the founding queens will store every piece they can find, even if it is 1/4 cup.
There is a list of seeds in the Preferred food list - http://www.formicult...ood-by-species/
I couldn't find kentucky blue grass seed anywhere, at Home Depot or grocery stores or garden stores. I was told its easy to find, but not from my experience. And then when I gave up and ordered some, my Pogonomyrmex completely ignored it. My Pogonomyrmex californicus (the all red-variety) ignored almost all of the food I gave them except insects. The bi-color or hybrid of them are far more accepting of food from my observations. The all red Pogonomyrmex californicus seem to die a lot faster too. Never had luck raising them at all. The bi-color and hybrid are vastly easier to keep, especially since they are far less picky. I tried all the foods people said Pogonomyrmex like, and my all red-variety Pogonomyrmex ignored everything, except termites and crickets.
I bet they are actually different species of Pogonomyrmex and just regarded as the same (Pogonomyrmex californicus), but when I said that in the past, no one ever agrees. They don't act or look the same, don't act the same toward food, nor the same in keeping them (bi-color variety being vastly easier to keep in my experience.)
In any case, my hybrid colored Pogonomyrmex like crushed peanuts the most. They like crushed walnuts too. And every ant likes termites, if you have any of those. And all of mine (except the all red variety that I gave up trying to raise) like quinoa seeds.
Edited by Vendayn, December 27 2015 - 5:40 PM.