
Rodent Management
Rodent Control in Monterey, CA
101 Exterminators does exclusion-first rodent control in Monterey, where roof rats (Rattus rattus) are endemic rather than occasional. The mature Monterey cypress and pine shading the canyons and the Presidio give them a permanent highway into rooflines. We seal the structure before we trap, because in this city the population outside never drops to zero. Licensed since 2005, SPCB Lic. #9119.
Warning Signs
Signs You Need Rodents Service in Monterey
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 Monterey
Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in Monterey.
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 Monterey
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 Monterey
Why do roof rats keep coming back to my house in New Monterey?
Because the canopy around it is permanent habitat and the entry point was never closed. Trapping removes the animals in your attic; it does not change the standing roof rat population in the Monterey cypress and pine along the street and canyon. Lasting control here means sealing every gap larger than a quarter inch at the roofline and cutting branch contact back about three feet from the structure.
Do I have roof rats or Norway rats in a Monterey hillside home?
Activity above the ceiling in Monterey is almost always roof rats (Rattus rattus); activity in a ground-level burrow is more likely Norway rats. Roof rats dominate citywide because of the cypress and pine canopy, while Norway rats concentrate around the wetland edges at Laguna Grande and Roberts Lake and in the dense commercial blocks near Del Monte Avenue. Droppings help tell them apart: roof rat droppings are smaller with pointed ends, Norway rat droppings are thicker and blunt.
Can rats get into an attic through the old vents on a 1920s Monterey house?
Yes — original gable and eave vents on Monterey's 1900s–1920s houses are the single most common entry we find. The screen behind them was light gauge to begin with, and decades of salt air corrode it until a rat can widen an opening with its teeth. We replace failed screen with quarter-inch galvanized hardware cloth mounted behind the original vent, so the historic exterior detail stays exactly as it looks from the street.
Local Pest Pressure
Common Pests We Treat in Monterey
Every area has its own pest profile shaped by climate, housing, and geography. These are the pests we see and treat most often in Monterey — tap any one to learn how to identify it and what treatment involves.
Rodent Control · Monterey
Free Pest Evaluation in Monterey
CA licensed and insured. Written estimate before any work begins. Urgent situations in Monterey are prioritized.