Scratching in the ceiling after dark, droppings in the garage, something moving inside a wall. If you have rats or mice in Newport Beach, we remove them and seal the building so the next ones cannot get in.
Newport Beach specifically
Newport Beach is three different environments in one city. The Upper Newport Bay ecological reserve is genuine protected wildlife habitat sitting directly against residential streets. The Peninsula and Balboa Island are dense, older, largely built before modern codes, with crawl spaces and shared walls. And the bluff and canyon neighborhoods on the inland side back onto open terrain. Salt air corrodes vents and flashing faster here than inland, which quietly opens entry points nobody is watching for.
Two things make Newport Beach harder than it looks. Salt-air corrosion degrades vent screens, flashing and roof penetrations faster than inland, and a screen that has rusted through is simply an open door. And waterfront properties with docks, boat storage and slips add harborage that most inland homes do not have. Roof rats work the palms and the mature landscaping and come in high.
Know which one you have
- Roof rats are the common one across Orange County. Slim, dark, tail longer than the body, excellent climbers. They live high — attics, wall voids, palms, dense landscaping. Overhead noise at night is almost always roof rats.
- Norway rats are heavier and blunt-nosed with a shorter tail. They burrow and stay low: crawl spaces, under slabs, along foundations, near drain lines.
- House mice get through far smaller openings and breed faster, so a small problem becomes a large one quickly. A mouse needs a gap about the width of a pencil.
Why we do not just set bait and bill you monthly
The standard industry model is bait stations and a recurring schedule. We do not work that way, because a recurring visit never addresses how the animals are getting in. Kill what is inside, leave the gaps open, and the property refills — which is precisely why the monthly visit never stops.
There is a second problem with bait. A poisoned rodent frequently dies inside a wall or attic where you cannot reach it, and you then live with that for weeks. Bait also carries documented secondary-poisoning risk to the hawks, owls and neighbourhood pets that eat rodents.
How we handle it
We inspect the structure and find the entry points — usually more than people expect, since a roof rat gets through an opening the size of a quarter. We seal them with materials rodents cannot chew through. We remove what is already inside by trapping, using live capture where the species and the situation allow. We do not use bait, poison or rodenticide of any kind, on any job. Where droppings and nesting have contaminated insulation we handle the removal and cleaning, because rodent waste in an attic is an air-quality problem and not only an unpleasant one.
Then we tell you the truth about the source. If a neighbour’s untreated property, a channel, an open lot or a nearby commercial building is driving it, you deserve to know that rather than pay us indefinitely to manage a symptom.
What rodent control looks like in Newport Beach
Photos are from our own crews on real jobs across Orange County and Los Angeles — never stock. We run these same steps on every Newport Beach call.
Take chewed wiring seriously
Rodent damage to electrical wiring is a documented fire risk and the kind of loss insurers ask hard questions about. If you have found gnawed wire, that moves to the front of the queue.
Why we do not use anticoagulant rodenticides
We solve rodent problems by sealing entry points and trapping. Tri County Trappers does not use anticoagulant rodenticides on any job.
California has progressively restricted them — AB 1788 in 2020, AB 1322 adding diphacinone, and AB 2552 moving chlorophacinone and warfarin to restricted status as of January 2025 — because a poisoned rodent does not die immediately. It becomes slow, easy prey, and carries the poison up the food chain into the owls, hawks and bobcats that eat it, and into pets that find it.
There is also a practical reason. Poison treats the symptom. It does nothing about the opening the rodent came through, which is why properties on a bait schedule stay on a bait schedule. Sealing the building fixes the cause.
What drives rat pressure in Newport Beach
The alleys are the engine on the Peninsula and Balboa Island. Almost every lot takes its trash out to a rear alley, and in summer the weekly vacation-rental turnover fills those enclosures faster than they get emptied. Rats feed there after dark, then climb the fence, the garage, and the eaves of a three-story lot-line wall. Marine Avenue and the Cannery Village and Lido blocks hold a standing population that pushes steadily into the residential lots around them.
Away from the water the drivers change. Untrimmed Mexican fan palms along Balboa Boulevard and Bayside carry dry skirts that roof rats nest in year-round. Dock boxes, canvas covers and boats left on lifts give them dry harborage over the water, and they come ashore on the lines. Ivy and bougainvillea on the bluff walls at Eastbluff and the Bluffs are cover the whole way up. In Santa Ana Heights, feed rooms and hay draw Norway rats that burrow instead of climbing.
Questions we actually get asked
We hear scratching in the ceiling of our Balboa Island cottage but there are no droppings downstairs. What is up there?
Almost always roof rats. They live high and rarely come into a kept living space, so the first evidence is overhead noise after dark rather than droppings on a floor. On the Island they arrive off the alley, a fence line or a neighboring roof, and get in at an eave, a corroded vent screen or a plumbing penetration. We inspect the attic and the roof together, because the noise is often nowhere near the opening.
Our slip has boats stored on lifts year round. Can rats live aboard and work their way up to the house?
They can, and in the harbor they regularly do. A covered boat, a dock box and a coiled line are dry, sheltered and undisturbed for months at a stretch. Rats travel the dock lines and the gangway, then work up through the landscaping to the structure. If you have a dock, it gets inspected along with the house. Clearing the attic while a dock box is still a nest just moves them back and forth.
The fan palms on our street have not been trimmed in years. Does that matter for rats?
It matters more than most things you could change on your own. A dead skirt on a Mexican fan palm is enclosed, dry and warm, and roof rats nest in it and raise young there. When the palm stands within jumping distance of a roof, it is also the ramp. Trimming the skirts out and cutting fronds and branches back off the roofline lowers pressure across the whole street, not only your lot.
The rest of what we do in Newport Beach
Most jobs here turn out to involve more than one of these. If you are not sure which one you have, call and describe what you are hearing — we will tell you straight, including when it is smaller than you think.
- Raccoon Removal in Newport Beach — attic entry, litters in spring, and the damage they leave
- Skunk Removal in Newport Beach — denning under decks, sheds and raised foundations
- Rodent Exclusion & Proofing in Newport Beach — sealing the building so the next ones cannot follow
- Attic Cleanup & Insulation in Newport Beach — clearing and decontaminating what they left behind
- All wildlife & pest services in Newport Beach
Licensed for the work we advertise, and clear about the rest
Wildlife control, structural pest control and construction are three separate licenses in California. Plenty of companies blur that line. We would rather tell you exactly where ours sits.
- Wildlife trapping and exclusion — this is us. Tri County Trappers operates under California Department of Fish and Wildlife Trapping License TP-10188, and every technician on our crew carries their own CDFW trapping license. Not a company license with unlicensed helpers under it. Each one, individually licensed by the State.
- Attic cleanout and decontamination — this is us. Removal, bagging, vacuuming and cleaning of contaminated material. We do not apply pesticides, rodenticides or bait on any job.
- Insulation, wood repair and structural work — not us. Tri County Trappers does not hold a Contractors State License Board license. That work is performed by a licensed contractor. We inspect it, document it and hand over the photographs so nobody starts cold.
- Structural pest control (Branch 2) — not us. If your situation needs it, we say so and point you to a licensed structural pest control operator rather than stretching our own license over it.
General liability, professional liability, workers’ compensation and commercial auto, all current, with limits well above what the State requires of a licensed trapper. Certificates on request, before you let anyone on your roof.
OUR METHOD
No rodenticides. No baits, powders, or treated devices.
We work with live traps and exclusion only — on every job, every time. That eliminates the secondary-poisoning pathway that kills owls, hawks, and the pets that eat poisoned rodents. California Department of Fish and Wildlife Trapping License TP-10188.
What rodent control costs in Newport Beach
Rodent work is priced in two parts, because it is genuinely two jobs.
- Sealing the building, $500 to $800 for a standard sized home. Priced by how many repairs it takes to make the property inaccessible, not by how many holes are visible from the driveway.
- Cleaning up what they left, $1,500 to $6,000. Contaminated insulation out, the space sanitised, and new insulation in where it is needed. Square footage is the biggest driver.
Plenty of homes need the first without the second. We will tell you which one yours is, and we will tell you if it only needs sealing. See what all of our work costs, including trapping and gopher removal.
The inspection is free with no conditions, and there is no trip fee if you decide not to go ahead. We can usually be out the same day.
Book a free inspection Call (949) 304-5445
Talk to the owner
Tri County Trappers is owner-operated. You work directly with the owner and our licensed specialists — rat and mouse control in Newport Beach is never handed off to an unlicensed subcontractor. Every technician on our crew carries their own CDFW trapping license, the owner reviews every inspection and every completed job, and runs jobs himself. Someone answers every call, seven days a week — call anytime. Free inspection, no obligation, and a clear number before anything starts.
Call (949) 304-5445 Email [email protected]
California Department of Fish and Wildlife Trapping License TP-10188, valid through 6/30/2027, and every technician on our crew carries their own. General liability, professional liability, workers’ compensation and commercial auto coverage — certificates on request. Member, National Wildlife Control Operators Association. 4.9 average rating on Google. We check every trap we set at least once every 24 hours. Where 14 CCR § 465.5(g)(2) applies it requires traps to be visited at least once daily — we hold to a rolling 24-hour interval, which is stricter than the rule. Payment plans available on larger jobs.
Book a free inspection
Pick an arrival window and it goes straight onto our schedule. You get a written report of what we found either way — and if you don’t have a problem worth paying to fix, we’ll tell you that.
No payment is taken to book an inspection. California Department of Fish and Wildlife Trapping License TP-10188.