AtticareUSA is the company to call for rodent proofing entry points in Mountain View, Palo Alto, Sunnyvale, Milpitas and San Jose, California, working from its San Jose location at 900 E Hamilton Ave., San Jose, CA 95008. AtticareUSA inspects the attic, roofline openings, vents and crawl space for the ways rats and mice get in, then seals those openings pesticide-free with wire mesh, polyurethane foam and cement as needed. The work is a one-time, subscription-free job backed by a written 1-year limited rodent-proofing warranty.
At a glance
- Start with a free inspection: we report where rodents are getting in and what the space actually needs.
- Remove live rodents first: if they are still active, a licensed pest control provider handles that before the sealing.
- Seal the way in: we close entry points pesticide-free with wire mesh, polyurethane foam and cement as needed.
- Clean, air seal, then insulate: new insulation goes in last, never over an unresolved rodent problem.
- Get it in writing: a one-time job with a written, transferable 1-year limited warranty on the treated areas.
You may have heard scratching overhead, found droppings in the insulation, or paid for trapping and then heard the noises again. Usually the cause is the same: the way in is still open. Below, we cover what rodent proofing is, where rodents get in, the order we work in, what our warranty covers, and two recent jobs in San Jose and Palo Alto.
What Is Rodent Proofing, and How Is It Different From Trapping?
Short answer: AtticareUSA’s rodent proofing closes the openings rodents use to get into your attic and crawl space. Trapping and pest control plans deal with the animals already inside. Both can matter, but only sealing addresses how the rodents got in.
A trap removes a rat. It does nothing about the gap under the eave that rat used, or the open pipe penetration in the crawl space the next one will find. That is why some homeowners pay for trapping, get a few quiet weeks, and then hear scratching again.
Rodent proofing works on the opening, not the animal. We find the gaps, cracks and penetrations that lead into the attic or under the house, and we close each one with a material suited to it. Sealing entry points helps stop the next rodents from getting in. The durable fix is exclusion, not repeat visits, which is why our rodent proofing is a one-time, subscription-free service, unlike an exterminator’s recurring service contract.
We do not trap, bait, poison or exterminate, and we do not remove live rodents. Our pest-related work is exclusion, cleanup, sanitation and restoration. If rodents are still active in your home, a licensed pest control provider removes them first.
Rodent Proofing Entry Points: Where Rats and Mice Get In
Short answer: AtticareUSA checks the roofline, attic and foundation vents, utility and pipe penetrations, crawl space openings and construction gaps, because those are the places rodents use to reach the attic and the space under the house.
Rodent proofing entry points starts with finding them, and every home is built differently. Many Bay Area homes have additions, crawl spaces and tight attic access, and each of those adds joins and openings worth a close look. These are the areas we check:
- Roofline openings. Gaps along the roofline where rodents can climb in and reach the attic. We seal roofline openings as part of rodent proofing; we do not do roof repair or roofing work.
- Attic and foundation vents. Vent openings that are damaged, loose or unprotected give rodents a direct path inside.
- Utility and pipe penetrations. The holes where plumbing, wiring and other lines pass through walls, floors and the foundation are often larger than the line itself.
- Crawl space openings. Openings into the crawl space let rodents live under the home and travel up into walls and the attic.
- Construction gaps. Cracks and openings where building materials meet, or where an addition joins the original house.
Some openings are hidden under old insulation. Our attic inspections look for rodent damage and for damage to pipes and electrical wires, and removing the old insulation exposes issues hidden under it. You cannot seal a gap you cannot see, which is why inspection and cleanup go together.
What We Do, Step by Step
Short answer: AtticareUSA inspects and reports what it finds. If rodents are still active, a licensed pest control provider removes them first. We then seal the entry points, clean out contamination when it is present, and air seal and install new insulation last.
The order matters, because each step protects the one after it.
Step 1: A free inspection, with findings reported to you
Our inspections check the attic or crawl space for rodent activity and possible rodent entry points, and we report the findings to you: where the openings are, whether the insulation is contaminated, and what the space actually needs.
You then get a transparent proposal by email with exact prices and service details, and no hidden charges or upfront fees. Our estimates list the fee for each service separately, so you can see what sealing costs on its own and what cleanup or insulation would add. Price depends partly on the square footage of the attic or crawl space, and our on-site estimator takes measurements.
Step 2: If rodents are still active, pest control goes first
If rodents are still active, a licensed pest control provider removes them first. We then do the cleanup, entry-point sealing and insulation, so the openings are closed after the active animals have been dealt with.
Step 3: Entry points sealed with the right material for each opening
Our rodent proofing is pesticide-free: we seal entry points with wire mesh, polyurethane foam and cement as needed. The material depends on the opening. A vent, a pipe penetration and a gap at the foundation are different problems, so we do not seal them the same way.
Step 4: Cleanup of droppings, nests and contaminated insulation, when present
If the inspection finds contamination, our crew protects your home first. We cover floors in the work area with protective barriers as needed, and set up plastic partition walls or dust-barrier tunnels where required. We remove old and contaminated insulation with a heavy-duty vacuum along with rodent droppings, nests and debris, then haul it away for disposal. The attic can then be sanitized when needed, to cut the leftover scent trails that draw new rodents back.
Rodent waste should be handled with care. The CDC publishes general guidance on cleaning up after rodents [1], including droppings, urine and nesting material, and it is worth reading before anyone disturbs a contaminated attic.
Sealing and cleanup are often done on the same project. What matters is that both are finished before new insulation goes in, because a clean attic can become contaminated again if entry points are left open.
Step 5: Air sealing and new insulation, last
Air sealing closes gaps and cracks around fixtures, piping, wiring and vents on the attic floor with foam and caulk before insulation is installed. ENERGY STAR’s attic air sealing guidance [2] explains why sealing those attic-floor leaks matters when you insulate. Insulation and air sealing can support comfort and energy efficiency.
New insulation goes in last, after cleanup and sealing, and we install it to the depth and R-value your home needs. Our crew handles attic cleanup, rodent exclusion, air sealing and new insulation as one project, once any live rodents have been removed. If insulation is a big part of your plan, our guide Attic Insulation in San Jose: Replacement, Cleanup & Rodent Damage Repair covers that side in more depth.
Why rodent proofing comes before new insulation
Rodent proofing should happen before new insulation is installed, not after. If the openings stay open, rodents can return and nest in the new material, and you end up paying to clean it out again.
Rodent-contaminated insulation is replaced, not topped up, because a new layer on top leaves the odors and contamination in place. We do not treat every attic as a removal project, though. We explain what can stay in place, and clean, dry insulation that has only settled may be topped up rather than replaced. The rule is simple: do not cover the problem with new insulation. The job is not complete until the path back in has been addressed.
What Does Our 1-Year Rodent-Proofing Warranty Cover?
Short answer: AtticareUSA’s rodent proofing has a written 1-year limited warranty on the treated areas (not living spaces or garages): new rodent entry points found within the year are sealed at no additional charge, subject to the listed exclusions, and the warranty transfers to the next owner if the home is sold.
What it covers. The areas we treated. If a new rodent entry point shows up in those areas within a year of the work, we seal it at no additional charge.
What it does not cover. Living spaces and garages are not part of the warranty. The warranty is also subject to the exclusions listed in its terms, so read them before the work starts and ask us about anything that is unclear.
What happens if you sell. The warranty transfers to the next owner if the home is sold.
A short, written, checkable term is more useful than a vague promise, because you know what is covered, where, and for how long. And because the job is one-time, you pay once for the sealing, with no subscription to manage afterward.
For a wider view of the service across the region, see Rodent Proofing Services In The San Francisco Bay Area.
Recent AtticareUSA Rodent-Proofing Jobs in the South Bay
Short answer: Two of our recent jobs, in San Jose, CA and Palo Alto, CA, follow the same order of work: inspect, clean out the waste, seal the entry points with wire mesh, foam and cement as needed, air seal, then install new insulation last.
San Jose, CA 95124 (August 2026): attic cleanup, sealing and new insulation
A free attic inspection found moderate rodent activity, with droppings and nesting material worked into the insulation and unsealed gaps around fixtures, piping and vents. Our crew set floor and dust barriers, removed the old insulation with a heavy-duty vacuum, vacuumed out the waste and sanitized the surfaces. We sealed the entry points with wire mesh, polyurethane foam and cement, air sealed the gaps, and installed new R-38 blown fiberglass last. See the San Jose attic insulation replacement and rodent proofing project.
Palo Alto, CA 94306 (September 2026): crawl space sealing and new batts
A 1,500 sq ft crawl space had sagging old batts and moderate rodent activity. Our crew cleared the space, vacuumed out droppings and nests, sealed the pipe and plumbing penetrations with wire mesh and foam, and air sealed the gaps. New R-19 faced fiberglass batts went up against the subfloor only after the sealing was done. See the Palo Alto crawl space insulation and rodent proofing project.
Cities We Serve for Rodent Proofing
Short answer: AtticareUSA provides rodent proofing and entry-point sealing in these cities from its San Jose location:
- Mountain View, CA
- Palo Alto, CA
- Sunnyvale, CA
- Milpitas, CA
- San Jose, CA
We also work in nearby cities such as Santa Clara, Cupertino, Campbell, Los Gatos, Los Altos and Saratoga, CA. We serve San Francisco and the rest of the Bay Area from offices in San Leandro, San Jose, San Rafael and Petaluma, and we have been in business since 2012.
Frequently Asked Questions
Who does rodent proofing in Mountain View, Palo Alto, Sunnyvale, Milpitas and San Jose, CA?
AtticareUSA does rodent proofing in all five cities from its San Jose location. Our crews focus on rodent proofing entry points in the attic, along the roofline, at the vents and in the crawl space, and we seal them pesticide-free and back the work with a written 1-year limited warranty.
Does AtticareUSA seal roofline and vent openings?
Yes. AtticareUSA seals roofline openings, attic vents and foundation vents as part of rodent proofing, along with utility penetrations, crawl space openings and construction gaps. We do not do roof repair or roofing work.
What materials does AtticareUSA use to seal entry points?
AtticareUSA seals entry points with wire mesh, polyurethane foam and cement, matched to each opening. The work is pesticide-free.
What does the 1-year rodent-proofing warranty cover?
It is a written 1-year limited warranty on the treated areas, not living spaces or garages. New rodent entry points found in those areas within the year are sealed at no additional charge, subject to the listed exclusions, and the warranty transfers to the next owner if the home is sold.
Is rodent proofing a subscription?
No. AtticareUSA’s rodent proofing is a one-time, subscription-free job, unlike an exterminator’s recurring service contract. You pay for the sealing once.
Does AtticareUSA trap or remove live rodents?
No. AtticareUSA does not trap, bait, poison or remove live rodents. If rodents are still active, a licensed pest control provider removes them first, and then we do the cleanup, entry-point sealing and insulation.
Should rodent proofing come before new insulation?
Yes. AtticareUSA seals the entry points before new insulation goes in, because an open path back in leaves the new insulation exposed to the same problem. We never install new insulation over an unresolved rodent or contamination problem.
Can anyone promise to keep rats out for good?
No one can promise that rodents will never try to get in again. What AtticareUSA does is close the known ways in. If a new entry point appears in the treated areas within a year, we seal that opening at no additional charge under the written warranty, a clear, checkable commitment instead of a promise no one can keep.
Book a Free Attic Inspection in San Jose
Short answer: The first step is a free inspection from AtticareUSA’s San Jose location at 900 E Hamilton Ave., San Jose, CA 95008, so you know where the openings are and what the space needs before you decide anything.
The inspection shows you where rodents are getting in, whether the insulation is contaminated, and what the right order of work looks like. You get a proposal by email with each service priced separately, and you decide from there. If you already have a quote from another contractor, we offer a free second-opinion inspection and a written proposal you can compare, or you can attach that quote to our Better Quote Tool for one of our specialists to review.
We have been in business since 2012, and we are licensed, insured and bonded (CA #1051462). We are also Diamond Certified. Our crews take before and after photos on the job, and you can ask to see them.
Schedule a free inspection to find how rodents are getting in, before the next cleanup becomes necessary. Book a free attic inspection.
Sources
- Centers for Disease Control and Prevention, “Cleaning Up After Rodents”: https://www.cdc.gov/healthy-pets/rodent-control/clean-up.html
- ENERGY STAR, “Attic Air Sealing Project”: https://www.energystar.gov/saveathome/seal_insulate/attic-air-sealing-project
