Stop Rats and Mice From Getting In — Permanent Rodent Proofing.
Trapping reduces the rodents inside your structure. Exclusion keeps them out permanently. We seal every gap, screen every vent, and close every entry point that rodents use to access your home — guaranteed.
Licensed · Insured · LA-Based
Signs You Have a Problem
- Recurring rodent activity despite repeated trapping — if rodents keep returning after traps have removed the visible population, unsealed entry points are allowing continuous reentry from outside
- Hearing rodents in the attic or walls but being unable to locate an obvious entry point — roof rats enter through gaps as small as 1/2 inch at roofline junctions, eave voids, and utility penetrations that are not visible without a systematic inspection
- Evidence of rodent activity in a newly purchased or recently renovated home — understanding the entry vulnerability of an unfamiliar structure before infestation establishes is the highest-value application of exclusion work
- Gnaw marks on PVC plumbing, electrical wiring insulation, or wood framing near potential entry points — active gnawing at potential entry points is a sign that rodents are attempting to enlarge an existing gap
- Droppings concentrated near a specific area of the structure such as a utility penetration, an eave corner, or a foundation vent — concentrated dropping sites typically indicate a nearby entry or harborage point
- Gap or damage visible at roofline junctions, fascia boards, eave voids, foundation vents, or around utility lines where they penetrate the exterior wall — these are the most common rodent entry points in LA's aging residential housing stock
Our Treatment Process
- 1
Systematic Exterior Entry Point Inspection
We conduct a methodical exterior inspection of the entire structure — roofline, eave voids, fascia and soffit junctions, foundation vents, crawl space access, utility penetrations (gas, electric, water, cable), weep screed, garage door weatherstripping, and any visible gaps in the exterior building envelope. We use a flashlight and inspection mirror to examine recessed areas. Every identified gap 1/4 inch or larger is documented.
- 2
Interior Confirmation
We inspect the attic space, crawl space (if accessible), garage, and utility areas from the interior to correlate exterior gaps with interior entry points, identify active runway evidence near entry points, and check for structural damage from prior rodent activity. Interior confirmation helps prioritize which gaps are actively being used versus which are simply potential vulnerabilities.
- 3
Material Selection and Sealing
Different entry point types require different sealing materials. Foundation vent screens are replaced with heavy-gauge hardware cloth (1/4 inch mesh) if damaged or missing. Eave and soffit gaps are sealed with metal flashing, copper mesh, or galvanized screen secured with construction staples and exterior-grade caulk. Utility penetrations are sealed with copper mesh stuffed into the gap and finished with mortar or expanding foam sealant. Gaps in concrete foundations are patched with hydraulic cement. All materials used are rodent-impenetrable — we do not use standard expanding foam alone, which rodents can chew through.
- 4
Roof and Roofline Work
Roof-level exclusion addresses the primary entry routes used by roof rats — the dominant rodent species in LA. We seal gaps at the roof-to-fascia junction, between roof tiles and the top plate, at chimney flashings, around plumbing stack vents, and at any roof penetrations. Where continuous eave venting creates unavoidable gaps, we install exclusion screening that allows airflow while blocking rodent entry.
- 5
Verification and Documentation
After all sealing work is complete, we walk the perimeter with you to review every sealed location, explain the material used, and confirm that no gaps have been missed. We provide written documentation of all sealed entry points with photographs. This documentation establishes a baseline for future inspections and is useful for property sales or landlord-tenant pest documentation.
How to Prepare for Treatment
- Trim tree branches that overhang or touch the roofline before our exclusion work — branches provide roof rats direct access to the roofline above any exclusion work at eave level
- Move stored items away from exterior walls in garages and storage areas so technicians can access the wall base and identify any floor-level entry points
- Identify and communicate any areas of the exterior that are difficult to access (steep slopes, tall rooflines, dense vegetation) so we can arrange appropriate access equipment
- If you have an active infestation, inform us so we can coordinate trapping with exclusion work — sealing an entry point while rats are inside the structure without providing an exit route or trapping them inside can create a secondary problem
After Treatment: What to Expect
- Inspect all sealed entry points quarterly — particularly after heavy rain, seismic events, or any exterior construction work that may have disturbed sealed areas
- Trim vegetation regularly — ivy, shrubs, and tree branches that grow back into contact with the structure provide rodents new pathways to previously sealed areas
- Check garage door weatherstripping annually and replace worn sections — degraded weatherstripping is the most commonly overlooked rodent entry point in LA residential properties
- If you hear rodent activity inside the structure after our exclusion work is complete, contact us immediately — activity after exclusion indicates either a gap we missed or a rodent population that was sealed inside and requires trapping removal
- Maintain all exterior vents with intact hardware cloth screening — damaged screens are the most common point of re-entry after initial exclusion work in Los Angeles
Rodent Proofing & Exclusion — Frequently Asked Questions
Trapping eliminates the rodents currently inside your structure. Exclusion sealing prevents new rodents from entering after the current population is removed. Without exclusion, roof rats from neighboring properties, fruit trees, and palm trees will re-enter a successfully trapped structure within days to weeks — Los Angeles roof rat population density is high enough that any unsealed structure will be re-colonized. Exclusion is the only permanent rodent control solution.
We guarantee our exclusion work — if rodents re-enter through a point we sealed within the warranty period, we return and address it at no charge. We cannot guarantee against new entry points created by subsequent structural changes, storm damage, or pest damage to sealed materials. Our written documentation of all sealed entry points allows clear assessment of whether a re-entry occurred at a previously sealed point or through a new opening.
Roof rats (Rattus rattus) are exceptional climbers that reach rooftops via multiple routes common in LA's urban landscape: overhanging tree branches, power lines and utility wires running to the structure, wood fences and fence posts, stucco walls (which they can climb directly), and palm trees. Once on the roof, they probe eave voids, tile gaps, and any roofline irregularity for entry. Cutting overhanging branches and maintaining clear roofline access is the most important complementary action for any exclusion program.
Older Los Angeles housing stock — Craftsman bungalows, Spanish colonials, post-war stucco construction — does have more entry vulnerability than newer construction, but complete exclusion is absolutely achievable and routinely accomplished. The key is systematic inspection rather than spot-treating obvious gaps. Our full exterior inspection documents every gap regardless of perceived significance. The most common missed entry points in older LA homes are at the rafter tail-to-fascia junction, at original-construction foundation vents with degraded original screening, and at roof-to-chimney junctions.
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