General Pest Control in Los Angeles: Bi-Monthly & Quarterly Plans

The National Weather Service describes the Los Angeles climate as Mediterranean: a dry summer and a rainy winter, with fairly modest temperature swings between seasons. Most local pest pressure follows that rhythm and the irrigation schedule layered on top of it. A recurring plan keeps the same visit frequency all year, but what the technician spends time on changes from one season to the next.

Late winter and early spring is ant season in the planning sense. UC IPM notes that Argentine ant colonies are just beginning to grow at that point, which makes treatment then most effective, and recommends caulking and baiting before the yearly invasion arrives. Spring visits therefore concentrate on finding trails early, treating where foragers travel and sealing the gaps they use.

By summer, the same ants come indoors looking for water and refuge from hot, dry weather, and earwigs follow when the yard gets too hot and dry. Sprinklers become the main source of moisture in the yard, so summer inspections look at wet soil and mulch pressed against the walls. PesPro sees that summer surge in ant activity every year in the hotter inland areas, from the San Gabriel Valley out to the Inland Empire.

Fall and winter bring a different set of problems. The first real storms can flood the shallow nests Argentine ants build just below the soil, and UC IPM lists flooded conditions as a trigger for sudden indoor invasions. Millipedes move in numbers when their habitat becomes too wet, earwigs look for shelter when nights turn cold, and centipedes and silverfish stay wherever a bathroom or laundry room holds moisture. Cool-season visits shift toward gutters, downspouts, crawl-space vents and the damp corners inside the house. [8] [2] [5] [6]

The University of California Statewide IPM Program defines integrated pest management as an ecosystem-based approach that focuses on long-term prevention, uses several techniques together, and brings in pesticides only after monitoring shows they are needed. When a product is used, it is chosen and applied to keep risk low for people, pets, beneficial insects and the environment. Those are four concrete commitments, and each one shows up on a PesPro visit in a specific way.

Inspection comes first: where ant trails start, which door or window frame has a gap, which planter bed stays soggy, where silverfish are leaving scales. Exclusion follows: UC IPM's pest notes for ants, spiders and millipedes all point to sealing cracks and openings, and the spider guide adds repairing screens and closing gaps around doors and windows.

Moisture is the third piece, because leaky faucets, sprinkler heads and wet mulch feed several of the pests on this page at once. Only then comes targeted treatment, matched to what UC IPM recommends for each pest: colony-level bait treatment rather than sprays for ants, crack-and-crevice dust in dry voids for silverfish, and nothing at all where cleanup and sealing solve the problem.

IPM also means deciding what not to kill. UC IPM calls centipedes beneficial predators that eat flies, cockroaches and other small household pests, and says pesticide use against them is rarely justified. Spiders are in the same position: the university's spider guide says insecticides will not provide long-term control outdoors, and that spider numbers follow the insects they eat. So the realistic goal of a service plan is a house where these animals rarely make it inside, not a yard with no living bugs in it. [1] [2] [3] [6] [4]

Nearly every pest a general plan covers lives outside and walks in. That puts most of the work on the exterior: the foundation line, door thresholds, weep screeds, utility penetrations and anywhere shrubs touch the stucco. In California, how that outdoor work is done is also regulated.

Since July 2012, rules from the Department of Pesticide Regulation have limited how pest control companies apply 17 pyrethroid insecticides outdoors around homes, restricting many applications to crack-and-crevice, spot or narrow pin-stream treatments, such as a band about an inch wide around a window or door. UC IPM separately warns against spraying pyrethroids on driveways, sidewalks and foundations because these products pollute waterways. The wide 'barrier spray' around a house that many people picture is not how compliant perimeter work looks today.

Do-it-yourself treatment tends to fail for reasons specific to these pests. A spray kills the ants it touches but not the colony or its queens; UC IPM states plainly that spraying ants indoors will not stop more from entering, and that sprays should not be used while baiting, since they kill the foragers that carry bait back to the nest.

Foggers are not recommended for silverfish, indoor insecticides are not recommended for earwigs, and outdoor spider spraying gives no lasting result. The common thread is that the spray treats the pest you can see while the moisture, food and hiding places stay in place.

Interior treatment on a PesPro plan is targeted to where the inspection finds activity: cracks and voids along baseboards, under sinks, around pipe penetrations and in laundry rooms. Dusts, for example, stay effective in dry voids but cake once they get wet, so they go where water does not reach. [7] [2] [4] [5] [3]

Three of the most common reasons people sign up for a general plan point back to the same thing: water. Silverfish prefer temperatures of about 71 to 90°F, and in warmer conditions need relative humidity above 75%, which is why laundry rooms and bathrooms are their usual home.

Silverfish eat starch: cereal, flour, pasta, pet food, wallpaper paste, book bindings and the glue in cardboard boxes. Their relatives, firebrats, take the opposite niche and cluster around water heaters, ovens and furnaces. UC IPM notes that large silverfish populations are nearly impossible to control until dripping water and damp surfaces are fixed.

European earwigs spend the day in cool, damp hiding places such as bark mulch, ivy on walls, boards, flower pots and leaf-filled gutters, then come out at night. They wander inside when outdoor conditions get too hot, dry or cold, but they cannot live long indoors without food.

House centipedes, for their part, hide in damp, dark cracks in bathrooms, closets and laundry rooms and hunt at night. A steady stream of centipedes usually means two things: the room stays damp, and there are other insects there for them to eat. Millipedes feed on rotting leaves and wood, so a thick mulch layer against the foundation is an open invitation.

The prevention steps that actually work come straight from those habits. Fix leaking faucets and pipes. Run a fan or dehumidifier in laundry rooms and bathrooms. Switch beds next to the house to drip irrigation and point sprinklers away from walls. Repair downspouts, grade soil so water drains away from the foundation and keep crawl spaces ventilated. Pull ivy, leaf litter, wood piles and deep bark mulch back from the walls, and keep plants and mulch from touching the foundation. Store dry food in containers with tight lids and lift stored boxes off the garage floor. [4] [5] [6] [2] [3]

Most pests on a general plan are nuisances rather than hazards, and it helps to know which is which. The western black widow is the most common harmful spider in California. Bites are uncommon and usually happen when someone reaches into a dark, undisturbed spot while cleaning or moving stored items.

Death from a black widow bite is very unlikely, but UC IPM advises staying calm and getting prompt medical advice, and notes that children, older adults and people with health problems are more likely to have severe reactions. Gloves for garage and shed cleanouts are a simple precaution. Yellow sac spider bites, when they happen, usually feel like a bee sting.

One persistent myth is worth correcting. According to UC IPM, the brown recluse does not occur in California: specimens have occasionally arrived with household goods, firewood or vehicles, but there are no breeding populations in the state, and the hobo spider has not been documented here either. A spider in a Los Angeles garage is very unlikely to be a recluse. PesPro's spider control page covers widows and other spiders in more depth.

The rest of the list carries smaller risks. The native southern fire ant can sting. A large centipede can give a painful bite if handled, with local swelling and numbness. Some millipedes release a defensive fluid that can irritate skin or burn the eyes, so children should not pick them up.

Earwigs are not a health hazard and pinch only when trapped in clothing. Silverfish damage is to property: they scrape paper, leaving irregular holes and stains on books, documents and wallpaper. And outdoors, Argentine ants protect aphids and scale insects on plants, which increases the damage those pests do in the garden. [3] [2] [6] [5] [4]

The general plan covers the everyday pests of Southern California homes: ants, spiders, silverfish, firebrats, earwigs, centipedes, millipedes, crickets and similar occasional invaders. It does not cover termites, and that is not an upsell: PesPro does not treat termites at all. For a termite inspection, contact a company that specializes in termites.

Some pests need a different protocol, different preparation or a different schedule, so they are separate services rather than add-ons to the general visit. Bed bugs require household preparation and a treatment that reaches eggs, nymphs and adults. Rats and mice are handled by the rodent control subscription, with rodent exclusion available when the structure needs sealing.

An established cockroach infestation, particularly German cockroaches inside kitchens and bathrooms, calls for gel baits and preparation and is quoted after inspection. Wasp, hornet and yellow jacket nests go to wasp and bee control, and pet-related flea and tick problems to flea and tick control. When a technician finds one of these during a general visit, you are told what was found and which service fits.

Plans run bi-monthly or quarterly. A home with steady ant pressure, heavy irrigation or a history of moisture pests is usually a better fit for bi-monthly visits; a drier, well-sealed home may hold up on a quarterly schedule. Pricing depends on property size, the pests involved and visit frequency, and quotes are free and usually available the same day. If covered pests come back between scheduled visits, PesPro returns at no additional charge. The team works in English and Spanish, and the Spanish site is at pespro.com/es.