Ants are one of the most common reasons San Bernardino residents call for help. They show up in kitchens in the dry heat of July, in garages after a winter storm, and along patios in early spring. Several species share the area, and each one behaves differently, so effective control begins with identification.
Which ants live in the Inland Empire
- Argentine ants are small, uniformly brown, and form giant supercolonies. They trail to sweets and water, and nest in soil, mulch and wall voids.
- Pavement ants nest under slabs and patios and push up sand in cracks.
- Harvester ants build bare, cleared mounds in dry ground and have a painful sting. They are more common on the edges of lots, washes and foothill properties.
- Southern fire ants are native to Southern California and sting; they nest in open soil.
- Odorous house ants smell like coconut when crushed and nest in wall voids.
- Carpenter ants occur in older wood, especially around leaks and in old trees.
Why dry San Bernardino still has ant problems
Water is the draw. Lawns, drip lines, pool equipment and hose bibs create moist pockets in an otherwise dry landscape, and ants converge on them. During extended heat, colonies relocate to cooler, damper spots, including walls and bathrooms. When rare heavy rains hit, nests flood and workers surge indoors. Stucco hairline cracks, gaps around plumbing and the seams of block walls provide easy entry. Plants like citrus and oleander host honeydew insects that ants tend. In foothill-edge areas, native harvester ants and others forage up to the edge of yards.
When it is time to call in San Bernardino
- You have trails that keep coming back despite cleaning.
- Ants emerge from outlets, window frames or wall edges.
- Several mounds appear in the yard, especially where children or pets play.
- Winged ants appear indoors.
- You notice sawdust-like debris around wood.
How providers handle it
Technicians figure out the species, locate trails and entry points, and then choose the right method. Argentine ants respond to non-repellent perimeter treatments and slow-acting baits that spread through colonies, and repellent sprays are avoided because they can fragment the colony. Harvester and fire ants are controlled with mound treatments or granular baits. Carpenter ants require locating and treating the nest and repairing moisture damage. Plant-feeding insects on shrubs may also be addressed to reduce the food that supports ants. Repeated visits are usual with supercolonies.
What San Bernardino homeowners can do first
- Clean up sweet spills and store sugary food in sealed containers.
- Rinse pet bowls and empty them overnight.
- Trim plants away from walls and roofs.
- Adjust sprinkler heads so water does not hit the stucco.
- Caulk gaps around pipes, windows and doors.
Making contact
Call (844) 725-1661 to be referred to a licensed independent pest control provider serving San Bernardino. PestMinistry is a referral service, not a treatment company, and the provider handles the identification and treatment.
Why do ants come in when it is hot?
They seek water and cooler spots, and homes with irrigation or plumbing provide both.
Are harvester ant stings serious?
The sting is painful and can cause allergic reactions in some people, so keep children away from mounds.
Will natural remedies help?
They may disrupt trails temporarily but rarely remove a colony.
How long does professional control take?
Baits can take days to weeks, and large supercolonies may need follow-up visits.