A restored Victorian home on a tree-lined Central California street — San Leandro, California service area

Rodent Management

Rodent Control in San Leandro, CA

Name: 101 Exterminators Inc.
Address: 635 Sanborn Pl Ste 12, Salinas, CA, 93901, US
Telephone: (831) 500-1613
Price range: $$
Rating: 5

101 Exterminators handles rodent control in San Leandro with exclusion first — sealing the way in, then clearing what is already inside. We are California licensed, SPCB Lic. #9119, and have worked Alameda County since 2005. This city was cherry orchards and truck farms before the war, and the mature canopy that replaced them still carries roof rats yard to yard, straight onto low-pitch 1950s roofs.

(831) 500-1613Free pest evaluation · no obligation

Local Context

Roof Rats Still Use the Old Cherry-Orchard Canopy to Reach Post-War Attics

San Leandro grew out of cherry orchards and truck farms — the downtown Cherry Festival still marks it — and when the tracts filled in between 1940 and 1965, the fruit trees and street trees stayed. Roof rats (Rattus rattus) are climbers. They travel fence line to limb to roof edge without ever touching the ground, and a low-pitch 1950s roof with wide overhangs gives them a flat run along the fascia. The way in is usually a gap where the eave meets the wall, a torn attic vent screen, or the corner above an attached garage door.

Down on the flats it is the other rat. Norway rats (Rattus norvegicus) burrow, and they hold the storm drains, creek banks and marsh edge — San Leandro Creek, the Oyster Bay shoreline, the industrial blocks off Davis Street and Marina Boulevard. They come in at grade: crawl space vents, a sub-area access door, the gap under a roll-up garage door, a broken sewer lateral. In a raised-foundation house the first sign is noise under the floor, not overhead.

Then there are the hills. Homes along Halcyon-Foothill and Bay-O-Vista sit against the undeveloped hillside that climbs toward Lake Chabot, all eucalyptus and oak, so the pressure there is constant and seasonal at once — heaviest once the December rains make the hillside less comfortable than an attic. Trapping alone in any of these three areas drops the count for a few weeks. The population outside the walls is unchanged.

How We Work in San Leandro

We find the entries before we set anything. On a San Leandro roof that means the eave-to-wall junction, attic and gable vents, the fascia line over an attached garage, and anywhere a limb or fence reaches the roof. At grade we check sub-area vents, the crawl space access door, the garage door sweep and utility penetrations. We seal with hardware cloth, copper mesh and sheet metal where each belongs, then trap inside and monitor along the exterior runways. If attic insulation is contaminated, we can remove it.

San Leandro Climate

San Leandro sits 56 feet above the bay and gets the warm side of East Bay weather, milder than San Francisco and close to what Oakland runs. Rain averages roughly 18 to 20 inches a year and falls almost entirely between November and March. Winters are never cold enough to shut anything down, so Argentine ants keep foraging through January and drywood colonies keep working inside wall cavities between swarms. Drywood swarmers fly August through October; subterranean swarms come with the rains, February through May.

Housing Stock

The city reads like a catalogue of post-war tract building. Most of the residential stock went up between the mid-1940s and the mid-1960s, in developments such as Washington Manor, Broadmoor, Bonaire and Floresta Gardens, and it is dominated by single-story wood-frame houses on shallow slabs with low or no crawl access. That construction has three habits worth knowing before an inspection: sill plates sitting close to grade, slab penetrations for plumbing that were never properly sealed, and attached garages framed straight into the house. Downtown and the blocks around Estudillo Avenue hold the small surviving pool of pre-1940 raised-foundation houses. Marina Boulevard and the belt west of the tracks are commercial, industrial and mixed-use.

Why Local Expertise Matters

A San Leandro house is usually a slab, usually post-war, and usually has no crawl space to inspect from. That changes how the work is done. More time goes on the slab perimeter, the plumbing penetrations, the garage-to-house junction and the attic, and less on the areas a raised-foundation inspection would prioritize first. It also changes what shows up in the report, since a forty-year-old slab crack is a Section 2 finding whether or not anything has moved into it yet. We have been licensed in California since 2005, we hold SPCB License #9119, and our reports are filed with the Structural Pest Control Board for Alameda County escrow.

Warning Signs

Signs You Need Rodents Service in San Leandro

Our program combines three components: (1) Exclusion — sealing gaps in foundations, pipe penetrations, vents, and roof eaves using hardware cloth, copper mesh, foam sealant, and sheet metal as appropriate. (2) Trapping — placement and monitoring of snap traps, live traps, and glue boards in active areas. (3) Exterior bait stations — tamper-resistant bait stations positioned along perimeter rodent runways for ongoing population management.

Droppings along walls, in cabinets, behind appliances, or in attic insulation

Gnaw marks on wiring, wood, plastic pipes, or food packaging

Grease marks along walls or baseboards — oil from rodent fur rubbed repeatedly on surfaces

Nesting materials (shredded paper, insulation, fabric) in hidden locations

Scratching or scurrying sounds in walls, ceilings, or under floors at night

Burrows in landscaping, mulch beds, or under concrete slabs

Citrus or avocado fruits with bite marks — a classic roof rat indicator

Pet acting alert at walls or cabinets when no visible cause exists

How It Works

Our Rodents Process in San Leandro

Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in San Leandro.

Inspection & Runway Mapping

We identify gnaw marks, runways, burrows, droppings, and grease trails to map rodent activity throughout the property — interior and exterior.

Exclusion

We seal all discovered entry points with durable materials appropriate to the opening — hardware cloth, copper mesh, sheet metal flashing, or foam sealant for smaller gaps.

Trapping & Bait Placement

Interior snap traps and exterior tamper-resistant bait stations are positioned along active runways. We monitor and service these on a schedule until activity ceases.

Follow-Up & Monitoring

We return to clear traps, replenish bait, check exclusion work, and confirm that the population has been eliminated before closing out the service.

Why 101 Exterminators

Rodents You Can Count On in San Leandro

Exclusion-First Methodology

Without sealing entry points, any rodent removed will simply be replaced by another. We seal the structure before or concurrent with trapping — not as an afterthought.

No Unmonitored Poison Bait Indoors

We do not place loose rodenticide indoors where rodents can carry it to walls and die inaccessibly. Interior work uses traps with daily monitoring during active treatment.

Regional Species Knowledge

Norway rats, roof rats, and deer mice behave differently and require different approaches. We identify the species present before selecting treatment methods.

Sanitation Recommendations

After resolving an infestation, we advise on harborage removal, vegetation management, and food storage to prevent reinfestation — not just a repeat service call.

Common Questions

Rodent Control FAQs for San Leandro

I hear scratching in my San Leandro attic at night — rats or mice?

Attic noise after dark in San Leandro is usually roof rats. They are the climbing rat, they run the fascia line and eave junction on the low-pitch 1950s and 1960s roofs across this city, and they are loudest in the first hours after dusk. Mice make lighter, faster sounds and turn up more in wall voids and the garage. What settles it is the droppings and the rub marks along the runway, so we look at both before setting a single trap.

Do houses along San Leandro Creek get a different rat than the ones up in Bay-O-Vista?

Usually, yes. The creek corridor, the storm drains and the industrial blocks toward Davis Street and the shoreline favor Norway rats, which burrow and enter at ground level through sub-area vents, garage door gaps and broken drain lines. Bay-O-Vista and the foothill streets below the Lake Chabot hillside see more roof rats coming off the eucalyptus and oak canopy and entering high. The exclusion work for each is completely different.

Will sealing the house be enough, or do we have to keep trapping in San Leandro?

Sealing is what makes the trapping hold. Rodent pressure here comes from San Leandro Creek, the shoreline marsh and the open hillside above Fairmont Drive, and none of those populations drop because you cleared your attic — so an unsealed house simply refills. We trap out what is inside, seal every opening larger than about a quarter inch, and keep exterior monitoring along the runways. Skipping the exclusion is the reason people end up calling an exterminator again every spring.

Local Pest Pressure

Common Pests We Treat in San Leandro

Every area has its own pest profile shaped by climate, housing, and geography. These are the pests we see and treat most often in San Leandro — tap any one to learn how to identify it and what treatment involves.

Roof Rats

The San Leandro Creek corridor and mature tract-era street trees give roof rats a continuous route to rooflines

Norway Rats

The shoreline industrial and food-processing belt and the Marina storm-drain system hold rat populations that do not empty out seasonally

Subterranean Termites

Slab-on-grade tract houses west of Foothill sit on a high water table, and unsealed plumbing penetrations give colonies a route in below anything a visual inspection would catch