Argentine Ants in Phoenix, AZ
Linepithema humile
Argentine ants form massive interconnected colonies. Learn how to spot them and how Antidote Pest Solutions gets rid of them.
Notes: From a Phoenix, AZ Exterminator
Appearance
Argentine ants are light-to-dark brown, roughly 1/8 inch, and move in fast, dense trails — often visible as a moving line along baseboards, sidewalks, and exterior walls.
Harborage
Unlike many ant species, Argentine ants form supercolonies with multiple interconnected nests and queens, often stretching across several properties. They favor moist soil near foundations, mulch beds, and potted plants.
Are They Dangerous?
They don't sting or bite people, but their sheer numbers make them one of the most persistent nuisance ants in Arizona, and they'll displace native ant species and contaminate food quickly.
Treatment
Because colonies are so interconnected, spot treatments rarely solve the problem long-term. Antidote Pest Solutions builds a perimeter-wide treatment plan that addresses the full colony network. Call in and speak to one of our service pros to break the trail for good.
Prevention Tips
Trim vegetation and tree limbs away from the exterior walls and roofline
Fix leaking irrigation, hose bibs, and AC drip lines they use as water sources
Seal cracks in the foundation, stucco, and around utility lines
Keep sweet spills, pet food, and ripe fruit cleaned up promptly
Store firewood and mulch away from the foundation
Rinse recycling containers before storing them outside
Behavioral Notes
Argentine ant colonies don't fight each other the way most ant species do — supercolonies from California to Europe are thought to share the same genetic lineage and cooperate as if part of one giant colony.
A single yard can host thousands of interconnected nests, all moving location within days if disturbed or if food/water dries up.
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“I had ants in my home and couldn't figure out where they were coming from. I tried store bought poisons and traps and nothing worked. These guys came in and within one day, not a single ant to be found. It's been several weeks now. So thrilled to have found them when I did, especially since the weather is changing and stirring up all kinds of creepy crawlies. Thank you!!"
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Frequently asked questions
