The Thief Ant (Solenopsis molesta) is pale yellow to light brown and typically measures 1/32–1/16 inch. Thief ants (Solenopsis molesta) get their name from their habit of nesting near other ant colonies and raiding them for food and larvae. They are among the smallest ants in North America — workers mea.

The Thief Ant is generally low-risk, but caution is still advised. No sting; not medically dangerous. Can contaminate food — including sealed packaging. Difficult to detect and treat due to tiny size.

In Arizona, thief ants are most often encountered in the following situations: Tiny pale yellow ants near greasy foods, meat, or pet food. Trails that are difficult to see due to the ants' tiny size. Nests in soil near the foundation or inside wall voids.

The Thief Ant is most active during: Year-round; most active spring through fall. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Store all food — especially meats and greasy items — in sealed containers. Seal entry points. Treat perimeter regularly.

Protein-based bait (not sweet bait) placed along active trails. Perimeter treatment. Crack and crevice applications.

Most store-bought ant sprays kill only the workers you see, while the queen and colony remain protected underground. Effective Thief Ant control requires baiting or targeted colony treatments that workers carry back to the nest. Pest Control Bros uses professional-grade products and application methods that address the entire colony.