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A modern craftsman home in a leafy Silicon Valley suburb — Los Gatos, California service area

Rodent Control in Los Gatos, CA

101 Exterminators handles rodent control in Los Gatos by sealing the structure first and trapping second. CA licensed under SPCB Lic. #9119, working Santa Clara County since 2005. Roof rats (Rattus rattus) reach hillside homes in Surmont and Belgatos through the tree canopy off St. Joseph's Hill rather than up a storm drain. That changes where the entry points are, and it changes where we start.

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Roof Rats Arrive Down the Canopy in Los Gatos, Not Up the Storm Drain

Los Gatos rat work starts at roof height, and the geography is the reason. The town's southern and western neighborhoods share a boundary with the St. Joseph's Hill, El Sereno and Sierra Azul preserves, and the oak and bay canopy that starts there delivers roof rats (Rattus rattus) into residential blocks overhead. So the entry points we find in Surmont, Belwood and the Kennedy Road hills are vent screens, eave gaps, roof-to-wall junctions and conduit boots, not foundation cracks.

Age of construction decides how easy that is. The census median year built in Los Gatos is 1972, and after fifty-plus years of seasonal movement the attic vents, fascia joints and pipe penetrations on that ranch and split-level stock have opened up. A roof rat gets through a gap the size of a quarter. Downtown is older still. The Almond Grove and Broadway Victorians have knee walls, dormer returns and porch soffits with voids that were never closed to a modern standard.

The creek line matters too. Los Gatos Creek runs through the middle of town from Lexington Reservoir down to Vasona, and its riparian corridor is a continuous travel route with water, cover and fruit. Homes backing the trail between Oak Meadow Park and Blossom Hill Road take rat pressure from that direction regardless of how far they sit from the mountains.

How We Work in Los Gatos

In Los Gatos we start on the roof. Techs walk the roofline for rub marks, chewed vent screens and eave gaps, then trace the branch bridges (oak, bay, plum, citrus) that let rats reach it in the first place. Under the house we check the crawl space and the utility penetrations. Exclusion comes before trapping: hardware cloth on vents, sheet metal at chewed fascia, sealed conduit boots. Then we trap inside the structure and place tamper-resistant exterior stations along the runways we actually found.

Los Gatos Climate

Los Gatos has a sheltered microclimate warmer than much of Silicon Valley in summer — afternoon temperatures regularly reaching 90–98°F — due to the surrounding hills that trap heat. The Santa Cruz Mountains immediately to the south and west moderate winter temperatures and provide slightly above-average rainfall (18–22 inches). The mountain interface creates a temperature inversion that can maintain cooler, more humid conditions in hillside neighborhoods even on hot valley days.

Housing Stock

Los Gatos holds three building eras on one street grid. The Almond Grove Historic District, west of North Santa Cruz Avenue, is Victorian and craftsman work from the 1880s through the 1920s, most of it framed in old-growth redwood and Douglas fir with generous trim, deep eaves, and original single-wall porch construction. The flats east and north of downtown filled in with ranch houses between the 1950s and the 1970s. The hillside lots above town carry custom houses from every decade since, set on posts, piers, and stepped foundations cut into the slope. The 1989 Loma Prieta earthquake matters more to a termite report here than most owners expect, because the repair work that followed opened walls, sistered joists, and replaced sills across much of the older part of town. A single house can hold sound new lumber in one bay and untouched 1890s framing in the next, so what the last inspector found tells you less than usual about what is there now.

Why Local Expertise Matters

The two halves of Los Gatos need different hands. An Almond Grove Victorian needs an inspector who will probe original redwood trim, read the patchwork left by a century of partial treatments and post-earthquake repair, and say which of it is Section 1 and which is a condition. A hillside house needs someone who will get on the roof, follow the branch routes back into the canopy, and close the roofline before anyone places a single bait station, because baiting a house that still has an open highway into the attic just feeds the population. 101 Exterminators, SPCB Lic. #9119, licensed since 2005.

Signs You Need Rodents Service in Los Gatos

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

Our Rodents Process in Los Gatos

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

01

Inspection & Runway Mapping

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

02

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.

03

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.

04

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.

Rodents You Can Count On in Los Gatos

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.

Rodent Control FAQs for Los Gatos

Why do I hear something running across the ceiling of my Los Gatos hillside home at night?

That is almost always a roof rat, and the ceiling is the giveaway. Roof rats travel at height and nest in attics and soffits, so in Surmont, Belgatos and the Kennedy Road hills you hear movement overhead from dusk through the first few hours of dark, not down in the walls at floor level. Mice sound lighter and more constant, and a Norway rat is more likely to turn up in a crawl space or garage. Which one it is decides the trap type and where it goes.

Will trimming the oaks and fruit trees around my Los Gatos house keep rats out?

It helps a great deal, but it does not finish the job on its own. Cutting branches back at least three feet from the roofline removes the bridge roof rats use to reach your eaves from the canopy off St. Joseph's Hill, and picking fruit before it drops removes the reason they came. The structure still has to be sealed at the vent screens, eave gaps and roof-to-wall junctions, because rats already inside keep using those openings, and a neighbor's trees you do not control will still put them on your roof.

Do rats damage anything besides the attic insulation in a Los Gatos home?

Yes, and the expensive damage is usually wiring and ductwork rather than insulation. Roof rats gnaw constantly to manage incisor growth, and in a 1970s Los Gatos attic that means romex jackets, low-voltage runs, and flex duct that then leaks conditioned air into the attic. They also chew irrigation lines and, on hillside properties, landscape lighting wire. We photograph what we find so you know what needs an electrician before we close the entry points.

Free Pest Evaluation in Los Gatos

CA licensed and insured. Written estimate before any work begins. Urgent situations in Los Gatos are prioritized.

Trusted by Los Gatos families since 2005