Argentine ants are the main ant story in coastal Southern California, and Long Beach is right in the thick of it. These small brown ants build interlinked colonies that span entire blocks, send long trails across walls and counters and always seem to come back. Understanding how they work is the key to getting them under control.
Ants you may see in Long Beach
- Argentine ants are about one-sixteenth of an inch, light to dark brown, and travel in dense trails. Their colonies include many queens and often cover several properties.
- Odorous house ants give off a coconut-like smell and enter for sweets.
- Pavement ants nest under slabs, patio stones and sidewalks.
- Southern fire ants and red imported fire ants occur in parts of Southern California, nesting in soil and stinging when disturbed.
- Carpenter ants are less common but turn up in moisture-damaged wood and trees.
Why Argentine ants love Long Beach
These ants favor mild, irrigated environments. Sprinklers in lawns and planters, the moisture on the coast and plentiful flowering plants with aphids and other honeydew-producing insects provide steady sugar and water. Densely built neighborhoods like Belmont Shore, Naples and Alamitos Beach have little distance between colonies, allowing them to merge. During dry spells or after rain, colonies move into houses for water or shelter. Stucco, window frames and utility penetrations all provide access.
When the season changes
Long Beach does not have a winter that stops ants. Dry Santa Ana wind periods in fall send colonies looking for water, and winter storms flood nests and push them indoors. Spring growth brings new aphid populations, and with them heavy trails up trunks and along fences. Expect something to be active in every month, and plan prevention around those predictable surges rather than waiting for a trail on the counter.
Why sprays often fail
Because Argentine ants have multiple queens and nests connected over wide areas, killing the workers you see accomplishes little. Repellent sprays can scatter them into new nests. Professionals favor slow-acting baits that workers carry back to the colony, paired with non-repellent perimeter treatments that ants cross without detecting. The effects take time, and trails may seem to grow before they fade. Maintenance visits are common, since neighbors' colonies can recolonize a treated property.
What a visit usually includes
- Inspection of trails, entry points and landscaping where ants nest or feed.
- Placement of bait stations or liquid baits near trails.
- A non-repellent barrier treatment around foundations, doors and windows.
- Recommendations on irrigation, plant trimming and cleaning.
- A scheduled follow-up to confirm results.
Home habits that help
- Trim vegetation so it does not touch walls, roofs or windows.
- Reduce irrigation near the foundation and fix drip leaks.
- Seal cracks around pipes, window frames and utility lines.
- Keep pet food and sweets in sealed containers.
- Control aphids and other plant pests that supply honeydew.
Who to call
PestMinistry is a referral service, not an ant company. Call (844) 725-1661 and we will connect you with an independent licensed provider in our network who treats ants in Long Beach.
Long Beach ant questions
Why do ants return even after treatment?
Argentine ant supercolonies recolonize from neighboring yards. Ongoing service and bait stations help.
Do ants bite?
Argentine ants are mostly a nuisance, while fire ants sting and cause painful welts.
Why are ants in my plants?
They farm honeydew-producing insects like aphids and scale. Treating those pests reduces the ant supply of sugar.
Is it safe for pets?
Providers use products with label directions for pets and children, and will tell you what to avoid after service.