101 Exterminators
101 Exterminators
(831) 500-1613

General Pest Control in San Francisco, CA

Monthly · Bi-Monthly · Quarterly Prevention Programs

Reactive pest control — calling an exterminator only when you have a visible infestation — is more expensive, more disruptive, and less effective than prevention-based maintenance. 101 Exterminators' general pest control programs use Integrated Pest Management (IPM) principles to stop insects and arachnids before they establish inside your home or business.. Serving San Francisco and surrounding San Francisco County.

Why San Francisco Homes Need Pest Control Services

Central California's climate creates significant pest pressure across all four counties. Salinas Valley's agricultural landscape generates Argentine ant supercolonies that migrate into homes seasonally. Coastal Monterey and Santa Cruz properties face persistent moisture-driven pest activity — carpenter ants, silverfish, earwigs — from fall through spring. Inland areas including Hollister and South Santa Clara Valley experience intense summer pressure from German cockroaches, paper wasps, and black widow spiders in garages and outbuildings.

Drywood termites in pre-1940 framing are the dominant concern. Subterranean termites active in fog-belt soil. Real estate transaction volume is among the highest in California — WDO inspections are a routine part of every property sale. Swarm season May–October for drywood; February–April for subterranean.

San Francisco Climate

San Francisco's marine climate — persistent fog, moderate temperatures, and year-round mild humidity — supports continuous termite colony activity without winter dormancy. Western neighborhoods (Sunset, Richmond) stay foggy and moist; eastern neighborhoods (Mission, Castro, Noe Valley) are warmer, favoring drywood termite swarm activity May–October.

Housing Stock

The city has approximately 20,000+ pre-1915 Victorian and Edwardian structures, many with original old-growth redwood and fir framing never comprehensively treated for termites. Row house configurations — where buildings share party walls — allow colony spread without typical swarming evidence. Post-1906 and post-WWII construction have separate but significant termite vulnerabilities.

Why Local Expertise Matters

San Francisco termite work is a specialty. Row house fumigation logistics, the city's pesticide ordinances, historic building treatment constraints, and the specific WDO reporting format expected by SF real estate agents all require local expertise. We hold SPCB License #9119 and have direct experience with these city-specific factors.

Signs You Need Pest Control Service in San Francisco

We offer scheduled maintenance programs on monthly, bi-monthly (every 8 weeks), and quarterly (every 12 weeks) cycles. Each visit includes a perimeter treatment, interior inspection, spot treatments for active areas, and documentation. Every program includes free re-treatment between scheduled visits if pests return — we don't charge extra to finish the job.

Ant trails along baseboards, countertops, or exterior walls — especially in spring and fall

Cockroach droppings (small, dark, pepper-like specks) in kitchen cabinets or drawers

Spider webs accumulating faster than you can remove them — especially black widows in garages

Silverfish damage to paper, cardboard, or fabric — irregular holes and yellow staining

Earwigs or centipedes regularly entering through doors, windows, or crawl space vents

Pantry moths (Indian meal moths) in dried goods — visible webbing and larvae in food

Seeing one cockroach — they are almost never alone

Our Pest Control Process in San Francisco

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

01

Initial Inspection & Assessment

We walk the property thoroughly — exterior perimeter, garage, crawl space access points, interior corners, and utility penetrations — to understand pest pressure and entry points.

02

First Treatment

A comprehensive initial treatment targets active pests and establishes a chemical barrier. We treat entry points, nesting areas, and conducive conditions with EPA-registered products.

03

Scheduled Maintenance Visits

Return visits maintain the barrier and address any seasonal pest pressure changes. We keep records of each visit so you can see the history of protection on your property.

04

Free Re-Treatments

If pests breach the barrier between visits, call us. We return at no charge as part of your plan — because our goal is actual pest-free results, not just completed appointments.

Pest Control You Can Count On in San Francisco

IPM-Based Approach

Integrated Pest Management means we inspect first, identify species, seal entry points, and treat with the minimum necessary product — not a blanket spray of everything.

Documented Service History

Every visit is documented. You receive a service record showing what was treated, what products were used, and what we found — important for rental properties, health inspections, and peace of mind.

Free Re-Treatment Guarantee

Between scheduled visits, if you see activity we treated for, call us. We come back at no additional charge. This is our commitment, not a fine-print exclusion.

Child & Pet Aware Products

We use EPA-registered products applied in targeted areas, not broadcast indoors. We discuss any pet or child safety considerations with you before every treatment.

General Pest Control FAQs for San Francisco

How often should I have pest control done?

For most Central California homes, quarterly service (every 3 months) provides excellent protection. Properties near agricultural land, with heavy vegetation, or with a history of ant problems benefit from bi-monthly (every 8 weeks) service. Restaurants, multi-family housing, and food-service businesses typically need monthly service.

What pests are covered under general pest control?

Our general pest programs cover ants (all species including Argentine ants and carpenter ants), spiders (including black widows), cockroaches, silverfish, earwigs, centipedes, millipedes, pantry moths, and most crawling insects. Bed bugs, rodents, termites, and wasps/bees are handled under separate specialized programs due to the different treatment approaches required.

Do I need to be home during service?

For exterior-only maintenance visits, you do not need to be home — we can service the perimeter and send you a service report. For interior visits or new inspections, someone 18 or older should be present to provide access.

How long does a general pest control treatment last?

Modern residual products are formulated to last 60–90 days under normal conditions. Factors like heavy rain, high-traffic areas, and sunlight exposure can reduce residual life. Our scheduled program intervals account for these factors.

Free Pest Control Inspection in San Francisco

CA licensed and insured. Written estimate before any work begins. Same-day response available for urgent situations in San Francisco.

Trusted by San Francisco families since 2005