Rats and Mice in Pasadena Houses
A rodent problem in this city is almost always a question about the building rather than about the household. The people who call us have clean kitchens and sealed bins and are still hearing something overhead at two in the morning, and the reason is nearly always that the house they live in was finished long before anyone thought about closing a structure against wildlife.
Pasadena's older districts are made of Craftsman bungalows on raised foundations, with deep overhanging eaves and exposed rafter tails. Those are lovely buildings and they are full of gaps that were never meant to be gaps. Add a mature street-tree canopy that lets an animal cross a neighbourhood without ever coming down to ground level, and the arroyo and the foothills feeding population in from both edges, and you have a city that keeps rodent contractors busy for reasons that have nothing to do with housekeeping.
Rodents Are the Whole of What We Do
Rats, mice and squirrels. Nothing else. That is a narrower offer than most companies make and it is deliberate, because this is a building trade rather than a spraying one, and doing it properly means owning a ladder, a crawl suit and a good torch rather than a tank.
If you ring about something outside that, we will say so on the phone rather than take the booking.
The Three Animals, and Why It Matters Which
Roof rats
Most of what we deal with. They are climbers, they nest above the ceiling rather than below the floor, and in Pasadena they arrive along branches and boundary walls rather than across open ground. Where they get in is the eave line — a rafter gap that was never blocked, a soffit join that has opened, a gable vent whose screen gave up two decades ago.
House mice
A much smaller world. A mouse lives within a few metres of whatever it is eating, behind a cabinet kickboard or inside a wall cavity, and it passes through an opening a little over half a centimetre across. On slab-built housing they come in at ground level; on a raised foundation they come up out of the void.
Norway rats
Lower and heavier. They burrow, they favour the older drainage and the damp ground near the arroyo, and where they are present the work happens under the house and along the foundation rather than up a ladder.
Which of the three you have decides the trap positions, the working height and the size of opening that has to be closed. A building sealed against a rat is frequently still wide open to a mouse, so we settle the species from droppings, rub marks and gnawing before anything else is decided.
Two Voids, Not One
This is the single most useful thing to understand about the housing here. Most older Pasadena homes have a subfloor void beneath the boards as well as a roof space above the ceiling, and on a great many of them the two are joined by the same chases the plumbing and wiring were run through.
That is why the noise appears to move around the house, and why an animal can live under your floor, travel up inside a wall and turn up in the roof without ever crossing an open room. It is also why inspecting only the attic finds half the job. We go underneath as well as above, wherever the access allows.
Book a rodent inspection in Pasadena
Tell us what you have seen and where. We will book an inspection, put the findings in
writing and only then talk about treatment.
Call (323) 301-7551
How the Work Is Sequenced
Inspection first, and photographed. The eave line from a ladder on every elevation, the roof void entered where it can be, the subfloor entered where it can be, the detached garage, then a slow walk of the foundation and the grounds. Every opening is listed and photographed before a price is put on anything.
Trapping second, on the runs the animals are genuinely using, serviced on a schedule rather than left down and hoped over. The catch rate across successive visits is the only honest evidence of whether the job is closing out.
Sealing third, and never before the trapping. Closing an occupied building leaves animals dying inside a wall cavity or under a floor where they cannot be reached, which is a considerably worse problem than the one you started with. Everything is closed in galvanised or stainless mesh, hardware cloth and metal flashing — foam is chewed straight through and steel wool comes out by the strand.
Clearing last. Soiled insulation, nesting and droppings come out and the space is treated. The scent marking on a runway outlasts the animals by a long way and reads to the next one as a recommendation, which is much of why properties that were only ever trapped keep having the same trouble.
Where We Are Careful About Poison
Indoors, nowhere. An animal that takes bait inside a Pasadena house dies inside a Pasadena house — under a floor, in a wall, above a ceiling — and the only remedy is opening the structure to find it. We trap instead.
Outdoors it has a real but narrow place: secured, anchored housings on properties where arrival is continuous, which here means the arroyo edge, the foothill margin, and commercial premises that trade with doors open. Everywhere else it is a subscription rather than a solution, and we will tell you when yours does not need one.
There is a second reason for the restraint. Rodenticide moves up the chain into the owls, hawks and coyotes hunting across the arroyo and the foothills, and those animals are doing a considerable amount of rodent control at nobody's expense.
What You Will Be Told Plainly
When a job is small. Plenty of calls here turn out to be one animal, one failed foundation vent and an afternoon's work, and dressing that up as an ongoing plan would be dishonest.
When the pressure is coming from something we cannot fix — protected habitat at the fence line, a neighbouring property that is the actual source, a shared bin store nobody maintains. Sealing your building still works and is still worth doing, but you should know that before you commit rather than after.
And when a repair belongs to another trade. A rotted rafter tail is a carpenter's job, chewed cable is an electrician's, and a wet subfloor needs the leak dealt with before there is any point sealing anything. We would rather point at those than quietly work around them.
