Researchers at the University of Hawaiʻi at Mānoa ran laboratory food-choice tests on the little fire ant, Wasmannia auropunctata, a tiny stinging pest. Offered cooked beef, sunflower seeds and water-packed tuna, the ants overwhelmingly chose the beef and the seeds.

The study appeared in the Journal of Applied Entomology. The authors' practical suggestion is that anyone trying to detect or bait the ants in a backyard might swap tuna for cooked beef and sunflower seeds.