The nest you can see is treated first. The nests you cannot see -- inside the soffit, in the ground near the foundation, in the hollow tree 20 feet away -- are found during our property sweep and treated the same visit. That is the difference.

Protective protocol matched to the threat level of the specific nest type.
Before treating the nest you called about, we sweep the property for all others. Eaves, soffits, attic gable vents, tree branches, ground depressions near the foundation, hollow landscape features -- all checked before treatment begins. Finding the nests you did not know about is the most important part of the job.
Every technician dispatched for wasp removal carries full protective equipment and species-specific treatment tools. The protective protocol is not the same for a small paper wasp eave nest as it is for a large yellow jacket ground colony. We size the response to the threat.
Yellow jackets nesting inside a wall void, soffit cavity, or attic space cannot be eliminated by spraying the exterior entry point. The nest is accessed through the cavity, and the entry point is sealed after treatment. This requires different equipment and a different approach than aerial or ground nest treatment.
Treated nesting sites without a residual barrier become next year's nesting sites. We apply residual product to all treated locations -- eave surfaces, ground openings, former void entries -- so that returning queens cannot re-establish. The prevention step is what makes wasp removal last more than one season.
Paper wasps build open-comb nests visible to the naked eye -- small clusters of hexagonal cells attached to a surface by a single stalk. They are identifiable by their thin waist and long dangling legs in flight. They are not defensive at a distance and do not pursue -- the risk from paper wasp nests comes from proximity and direct physical contact with the nest or the immediate surrounding structure. Removal is straightforward with proper protective equipment. The priority is applying residual to the site after removal to prevent the following season's queen from re-establishing at the same location.
The behavioral profile of yellow jackets -- as opposed to paper wasps -- is the reason void nests and ground nests require professional treatment. A yellow jacket colony does not tolerate intrusion. The defensive response is proportional to colony size: a small early-season colony of a few hundred workers produces a manageable defense, while a late-summer colony of 4,000 or more produces a simultaneous attack by dozens of workers that can result in multiple stings before a person can retreat. DIY knockdown spray aimed at the entrance of a ground nest stimulates the colony's defensive response without delivering enough active ingredient to the interior to eliminate the population -- the result is an agitated colony that is now aware of a threat at its entrance, with hundreds of workers mobilized in defense and an undamaged nest interior.
The gray football-shaped nest in a tree branch or attached to a structure is the most visually distinctive of all stinging insect nests. Bald-faced hornets build it, and they are among the most aggressive stinging insects in San Anselmo, CA. Nest disturbance at close range produces an immediate defensive response -- multiple workers exiting the nest and pursuing the threat simultaneously. The nest cannot be safely approached without full protective gear and appropriate application distance. Homeowners who recognize a bald-faced hornet nest but cannot reach it with a spray can often attempt to break it down with a long stick or knock it loose with a thrown object -- these approaches consistently result in stings because they agitate the colony without eliminating it.
Found a ground nest or aerial nest in San Anselmo? Call +1-866-315-0243. Same-day wasp response available in San Anselmo -- we confirm arrival on the call.
The most problematic wasp situation from a DIY treatment standpoint is the void nest -- a yellow jacket colony established inside a wall void, soffit cavity, or attic space. Void nests are identified by a consistent entry point through a gap, crack, or opening in the exterior of the structure -- typically a wood joint, a gap in vinyl siding, or an opening around a pipe or conduit penetration. The number of workers entering and exiting the entry point is a reliable indicator of colony size and maturity. A large void nest may have a substantial buzzing sound audible from inside the adjacent room. Spraying the exterior entry point with consumer knockdown spray addresses only the guards at the entrance -- it does not reach the nest chamber inside the void, and it agitates the colony while leaving the population intact. The workers inside increase their defense activity, and the colony may begin exiting through secondary entry points deeper in the structure. The correct approach is void injection -- applying insecticide directly into the nest chamber through a small access point -- followed by sealing the primary entry after the colony is eliminated.
The fall window after natural colony die-off is the right time to apply residual to recurring nesting sites. Eave surfaces where paper wasp combs have been removed year after year, attic ventilation screens with prior yellow jacket activity, and foundation areas near prior ground nest sites all benefit from post-season residual application. It prevents the queen that overwinters from re-establishing at the same location -- the most predictable source of next year's nest problem. For properties with structural vulnerabilities -- gable vents, attic ridge vents, deteriorated fascia board gaps -- we assess those sites at the same time and discuss whether exclusion repairs would further reduce re-entry risk in future seasons.

We prioritize active stinging insect calls. Same-day service available in San Anselmo and surrounding San Anselmo, CA areas.
Call +1-866-315-0243Six services covering every nest type and situation -- from paper wasp eave removal to yellow jacket void injection.

Full property sweep is the first step. Treatment sequence follows from the complete nest map.
Paper wasp nests removed with protective equipment, nesting sites treated with residual, seasonal prevention addressed in one visit.
Ground nest entrance located, treated with professional insecticide applied to the colony interior, entrance sealed after elimination. Full protective equipment required -- proper protocol produces safe, complete elimination of even large late-season colonies.
Professional treatment from safe application distance with full protective gear. The gray enclosed nest is a high-aggression situation -- correct approach and distance are required.
The entry-point spray fails for void nests. We access the nest chamber directly, treat at the source, and seal the entry.
Fall application of residual insecticide to prior nesting sites -- eave boards, gable vent edges, former ground nest entrances, and soffit gaps -- to prevent spring queen establishment at the same location.
Clear process, confirmed on the call.
Phone assessment establishes the nest type and urgency. We confirm dispatch before you hang up.
Full bee suits, extended-reach application equipment, and species-specific products. The protective protocol is matched to the nest type described on the call -- not a one-size approach.
We find all of them. The nest you called about and the ones you did not know about are both on the treatment list.
Treatment sequence is determined by nest type and location -- the correct order minimizes defensive response cross-contamination. Residual applied to prevent re-establishment.
Real wasp removal situations and outcomes in San Anselmo and San Anselmo, CA.
I found the ground nest when I was nearly on top of it. Called Show Me Pest Control immediately. Same-day service on a Sunday. Technician found two additional nests during the sweep. Every nest treated. No stings at pickup the next day.
The hornet nest in the tree branch looked like a large paper wasp nest to me. I sprayed it. Eleven stings. Show Me Pest Control came out the same afternoon, identified the species immediately, treated from a correct distance with the right equipment. The difference in approach was night and day from what I had attempted.
Previous contractor: spray the soffit exterior, invoice, repeat. Show Me Pest Control: attic access, void confirmed, direct injection, entry sealed. Problem gone. No stings at the entrance the following year. The two approaches are not in the same category.

Same-day wasp removal in San Anselmo. Call and we confirm arrival before you hang up. Full property nest sweep included on every visit.
Call +1-866-315-0243 -- Same Day