Rodent Management
Rodent Control in Foster City, CA
101 Exterminators does rodent control in Foster City exclusion-first: we find the openings, seal them, then trap. Roof rats (Rattus rattus) are the species behind most calls here, moving along the lagoon banks, the levee trail plantings, and the tract street trees that have had fifty years to reach the rooflines they were planted beside. We are California licensed, SPCB Lic. #9119, and have worked San Mateo County since 2005.
Warning Signs
Signs You Need Rodents Service in Foster City
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 Foster City
Every job follows the same methodical approach — no shortcuts, no guesswork. Here is what to expect when you work with us in Foster City.
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 Foster City
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 Foster City
Why do I hear rats in the attic in Foster City when there are no creeks or fields nearby?
Because the local species travels above ground. Roof rats (Rattus rattus) use lagoon-bank landscaping, levee trail plantings, fence lines, and the mature tract trees now overhanging 1970s roofs, then enter at the stucco-to-fascia seam, a corroded eave vent, or a plumbing boot. Cutting branches back off the roofline and closing those openings does more than trapping alone ever will, because it removes both the road and the door.
Can rodent work be done near the Foster City levee without harming marsh wildlife?
Yes, and it changes the approach. The Bay side of the levee and the Belmont Slough edge are habitat for protected species including the salt marsh harvest mouse and Ridgway's rail, so we rely on exclusion and trapping there and keep any exterior rodenticide in tamper-resistant stations placed against the building, away from the marsh boundary. Sealing the structure is the part that holds anyway — bait alone never keeps the next rat out.
One unit in our Foster City townhome complex has rats — do neighbors need service too?
In attached housing, nearly always. Townhome and condo rows here share roof planes and soffits, so rodents entering above one unit move through framing to the next. We inspect and seal at the building level and coordinate with the HOA so the exclusion line is continuous. Sealing one unit while the adjacent roofline stays open simply relocates the activity a few feet down the row.
Local Pest Pressure
Common Pests We Treat in Foster City
Every area has its own pest profile shaped by climate, housing, and geography. These are the pests we see and treat most often in Foster City — tap any one to learn how to identify it and what treatment involves.
Rodent Control · Foster City
Free Limited Rodents Inspection in Foster City
CA licensed and insured. Written estimate before any work begins. Same-day response available for urgent situations in Foster City.