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A restored Victorian home on a tree-lined Central California street — Berkeley, California service area

Wasp & Bee Removal in Berkeley, CA

101 Exterminators handles wasp and bee removal in Berkeley — yellow jackets in the ground and in wall voids, paper wasps under eaves, and honey bee colonies inside the walls of century-old houses. Berkeley's deep Craftsman overhangs and the dry slopes along the Tilden and Wildcat Canyon boundary give both groups exactly what they nest in. Our technicians work in full protective equipment. SPCB Lic. #9119, since 2005.

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Late Summer Is When a Berkeley Yellow Jacket Colony Is at Full Strength

Yellow jacket colonies build all season and peak in late summer, roughly August through October, when the nest holds the most workers it will ever hold and foragers switch hard toward protein and sugar. That is when a Berkeley backyard table, a Live Oak Park picnic, or a compost bin suddenly has company. Most of those nests are underground — an abandoned rodent burrow, a gap under a stone retaining wall, a void behind a hillside crib wall — and the entrance is often a hole no wider than a thumb.

The eastern edge of the city is the pressure zone. Berkeley's upper neighborhoods sit directly against Tilden Regional Park, Wildcat Canyon, and EBMUD watershed open space, and those dry, undisturbed slopes are prime ground-nesting habitat. Properties in Cragmont and along the ridge get the highest ground-nest counts. Down in the flats, the nests tend to be aerial instead: paper wasps building open combs under the deep eaves and porch ceilings that Craftsman and brown shingle houses have in abundance.

Honey bees are the third call, and they are a different job entirely. Spring swarms look for a dry cavity, and a hundred-year-old Berkeley house is full of them — hollow stud bays behind shingle siding, unused chimney flues, the space above a porch ceiling. A colony that establishes there builds comb, and comb left in a wall after the bees are gone melts, stains, and draws beetles, ants, and rodents. Removing the comb is not optional on those.

How We Work in Berkeley

We find every entrance before we treat one. On a Berkeley property that means walking the slope for ground-nest holes at the base of retaining walls and along cut banks, then reading the eave lines, porch ceilings, pergolas, and attic and gable vents from below. Ground nests are treated in the evening when foragers are home. For a colony in a wall void we open, treat, and remove the nest and comb, then seal the cavity so the same void does not get reused next spring.

Berkeley Climate

Berkeley's climate transitions from the foggy flatlands near the Bay to the warmer, drier hillside neighborhoods above the UC campus. The flats receive more marine fog, supporting subterranean termite activity in moist soils. The hills and hillside neighborhoods are warmer and drier — ideal drywood termite territory with swarms active from May through October. Annual rainfall averages 22–25 inches in the hills.

Housing Stock

Berkeley's housing stock is among the oldest in the East Bay. The flatland and hillside neighborhoods have exceptional concentrations of pre-1930 construction — Craftsman bungalows, brown shingled homes, and Edwardian flats built by the architects and developers who shaped Bay Area residential architecture. Many of these structures have original old-growth Douglas fir framing, minimal previous termite treatment history, and structural configurations that allow lateral colony spread through shared spaces. The hills have 1920s–1940s construction with their own significant termite histories. Post-war development in South Berkeley and West Berkeley is more modern but not immune.

Why Local Expertise Matters

Berkeley's historic housing stock is among the most complex termite inspection environments in California. The specific structural characteristics of brown shingle homes, the lateral colony spread common in Craftsman blocks, and the historic preservation considerations that affect treatment options all require direct field experience. We bring SPCB License #9119 and deep East Bay expertise to every Berkeley inspection.

Signs You Need Wasps & Bees Service in Berkeley

We treat yellow jacket nests (including in-ground and wall-void nests), paper wasp nests under eaves and overhangs, European and bald-faced hornet nests, and mud dauber tubes. For honey bee hives established in walls or structures, we provide complete treatment and nest removal including comb excavation to prevent future odor and secondary pest attraction. For accessible swarms, we can arrange transfer to a local beekeeper.

Visible nest under eaves, in shrubs, attached to window frames, in tree cavities, or in attic vents

Repeated wasp activity near a specific location on the structure — nest is likely nearby

Wasp or bee activity around a specific gap, crack, or vent opening — indicates cavity nest inside

In-ground yellow jacket activity — small hole in soil or mulch bed with wasps entering and exiting

Honey bee swarm visible on a tree, shrub, or structure — usually a temporary cluster

Buzzing sounds within walls, soffits, or chimney area — established honey bee hive

Our Wasps & Bees Process in Berkeley

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

01

Species & Nest Location

We identify the species and locate all nesting sites, including in-wall or structural voids that require special access. Species determines the treatment approach.

02

Treatment in Protective Equipment

Our technicians treat nests in full protective equipment — veil, suit, and gloves. Evening treatment is preferred for ground nests when foragers have returned to the nest.

03

Nest Removal

After treatment, accessible nests are physically removed. For wall-void nests, we advise on comb removal to prevent secondary pest attraction from wax, honey, and larval material.

04

Entry Point Sealing

We seal entry points used by cavity-nesting species to prevent re-colonization by a new colony in the same location.

Wasps & Bees You Can Count On in Berkeley

Bee Relocation Option

When possible, we work with local beekeepers to relocate honey bee swarms and accessible hives rather than exterminating them. Good for bees, good for local agriculture.

Wall-Void Nest Removal

Nests inside walls require more than just treatment — the comb must be removed to prevent honey seepage, secondary pests, and odor. We handle the complete remediation.

Same-Day Service for Emergencies

A wasp nest near an entry door, child's play area, or pet run is a safety emergency. We prioritize same-day or next-day service for these situations.

Evening Ground Nest Treatment

Yellow jacket ground nests are treated at dusk when the full colony has returned, maximizing effectiveness and minimizing any risk of disrupted forager activity.

Wasp & Bee Removal FAQs for Berkeley

Why are yellow jackets suddenly everywhere in my Berkeley yard in September?

The colony is at its yearly peak. Yellow jacket nests grow all season and hold the most workers in late summer, and by September the foragers are ranging widely and are aggressive about protein and sugar — which is why they find the grill, the drink can, and the compost. The nest itself is usually within a short distance, often in a ground hole or under a retaining wall. Finding and treating that entrance is what actually ends it.

There are honey bees living in the wall of my Berkeley brown shingle — can they be relocated?

An accessible swarm that is still clustered on a branch or a fence can often be transferred to a local beekeeper, and we prefer that outcome. Once a colony has moved into a wall cavity and drawn comb, relocation is rarely practical, and the work becomes treatment plus full comb removal. Leaving comb in the wall of an older Berkeley house causes honey to seep through plaster and attracts ants, beetles, and rodents later.

Are the wasps under my Berkeley porch eave the same as the ones in the ground?

Usually not. The open, upside-down paper comb hanging under an eave or a porch ceiling is a paper wasp nest — smaller colony, slower to defend, visible cells. Yellow jackets build an enclosed papery nest hidden in a ground burrow or a wall void, with a stream of insects going in and out of one small hole. The ground nests are the ones that put people in urgent care, and they are treated differently.

Free Limited Wasps & Bees Inspection in Berkeley

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

Trusted by Berkeley families since 2005