Squirrels in the Attic in Texas: What They Chew and How to Get Them Out

Texas attics are warm twelve months a year. That matters more than you might think, because a fox squirrel or gray squirrel scouting for a nesting site does not have to weigh your attic against a cold alternative. It just has to find the gap. Once it does, the damage starts the same day it moves in, not when you finally call someone.

A squirrel's front teeth never stop growing. Chewing is not a bad habit; it is a biological requirement. Wood, foam insulation, plastic plumbing pipe, and electrical wiring are all targets. The wiring is the one that should concern you most.

This guide covers what squirrels chew once they are inside, why the fire risk deserves serious attention, when nesting seasons fall in Texas, and how licensed technicians remove them without harming them. If you are hearing rolling or scurrying sounds above your ceiling in Austin, San Antonio, Houston, Dallas, or anywhere else in the state, the information below applies to you.

What Squirrels Actually Chew Once They Are Inside Your Texas Home

The moment a squirrel settles into an attic, it begins reshaping the space to suit itself. Gnawing on wood framing, stripping foam board insulation for nesting material, and chewing through plastic water supply lines are all routine. Electrical wiring is the most dangerous target, and it is also a common one.

When a squirrel strips the sheathing off a wire and leaves the conductors exposed, that wire can arc against surrounding materials, sometimes days or weeks after the animal chewed it. Attic spaces in Texas homes hold plenty of fuel: blown-in cellulose, fiberglass batting, dried wood framing that has seen decades of heat. Rodent-chewed wiring is a long-recognized cause of home electrical fires, and squirrels are among the most common attic-dwelling culprits.

Beyond wiring, squirrels cause several other categories of damage:

• They gnaw roof decking and rafter boards, weakening structural members gradually over months
• They shred blown-in insulation to build nests, cutting the insulation's R-value and raising your energy bills
• They chew through flexible HVAC ducts, which are common in Texas attics and easy targets
• They contaminate insulation with urine and droppings, creating odor problems and introducing leptospirosis risk

The chewed wiring often sits along the eaves, tucked behind the insulation layer, well out of sight from the attic hatch. A technician's inspection covers those runs specifically, along with the framing near any confirmed entry points.

Is the Fire Risk Really That Serious?

Yes. Chewed wiring is the damage homeowners most consistently underestimate, partly because the wire looks intact from a distance. What matters is whether the insulation sheathing is compromised. A squirrel does not need to sever a wire to create a hazard. Bite marks that expose bare copper are enough.

The arc happens when two conductors touch, or when one conductor gets close enough to a grounded metal surface. In an attic, that can mean a joist hanger, a nail, or a metal vent duct. The first arc may char a small area and stop. The second arc may not. A chewed conductor that never starts a fire is not a safe outcome. It is a lucky one.

If squirrels have been in your attic for more than a few weeks, a licensed electrician should walk the wiring after the animals are out. Many Texas homeowner's insurance policies cover wildlife damage, but some carriers require documentation of a wiring inspection before they will process a claim. Confirm that with your agent before assuming coverage applies.

Squirrel Nesting Seasons in Texas

Texas has two common attic species: the fox squirrel and the Eastern gray squirrel. Both produce two litters per year. According to the Texas Parks and Wildlife Department, breeding in Texas typically occurs in December through February for the first cycle and again in May through June, with young born roughly six weeks after each breeding period. That puts pups in the nest in late January through early March and again in June through July.

A female with young will not leave willingly. This is the most important piece of information for timing a removal correctly. Install a one-way door while pups are present and too young to follow their mother, and she will chew, pry, and gnaw her way back in through whatever she can find. Experienced technicians check for active nesting and the presence of dependent young before any device goes on the house.

Outside of those nesting peaks, squirrels still use attics as food caches and sheltered rest areas. In Texas, where winter temperatures rarely close off outdoor foraging for long, the damage can continue year-round. The two nesting periods are simply when the population inside an attic can grow fastest.

How Licensed Technicians Remove Squirrels

The professional standard is exclusion: sealing every entry point on the structure except one or two, then placing a one-way door (a one-way exclusion funnel that lets animals exit normally but blocks re-entry) at those remaining openings. Squirrels leave to forage, as they do every day, and find they cannot get back in. Within five to ten days, the attic is empty. The technician returns, removes the devices, and permanently seals the final openings.

No trapping stress, no relocation, no mother separated from dependent young when the process is run correctly.

The steps in order:

• Full perimeter inspection: Every potential entry point gets documented. Squirrels can pass through a gap about the size of a golf ball, so anything that size or larger on the roofline, soffit, or fascia is a candidate.
• Secondary sealing: All identified entry points except the primary one are sealed with galvanized hardware cloth, copper mesh, or aluminum flashing, depending on the material and surface condition. Standard caulk and foam are not adequate; squirrels chew through both.
• One-way door installation: A quality one-way device goes on the primary opening. The animal exits normally and cannot re-enter from outside.
• Monitoring period: Five to ten days. Technicians watch for signs that squirrels are attempting to re-enter elsewhere, which can reveal a secondary gap missed in the initial inspection.
• Final seal: Once activity stops, the one-way door comes out and the opening is permanently closed.

The full process, from first visit to final seal, typically runs one to three weeks. Larger homes or complicated rooflines with many potential entry points can take longer.

What About Trapping?

Live trapping is sometimes used alongside exclusion, particularly when young squirrels are inside and must be kept with their mother, or when a section of the structure makes a one-way door installation impractical. Trapping alone, without sealing the entry points, does not solve the problem. New squirrels will find and use the same openings within weeks.

Fox squirrels and gray squirrels are classified as game animals in Texas, so hunting-season and license rules normally apply to taking them, and nuisance situations are handled under separate provisions. Verify the current rules with the Texas Parks and Wildlife Department at tpwd.texas.gov before trapping anything yourself. Working with a licensed company keeps the removal inside those rules without you having to navigate them.

Poison has no role in squirrel removal. Full stop. Rodenticide creates secondary poisoning risk for the hawks, owls, and foxes that feed on squirrels across Texas. It also leaves carcasses in wall voids and ceiling cavities, which means weeks of odor and fly activity that is expensive and unpleasant to resolve.

Sealing for Good: What Keeps Squirrels Out in the Texas Climate

Texas homes face specific weathering pressures. Summer heat warps fascia boards. Freeze-thaw cycles in North Texas and the Hill Country work gaps open at wood joints. Heavy rain events soften older soffit materials. A roofline that was sealed well two years ago may have new vulnerabilities by the time a squirrel comes looking again.

Durable exclusion uses materials squirrels cannot chew or pry open. Effective choices include:

• Heavy-gauge galvanized hardware cloth: Stapled and then flashed over with aluminum or galvanized steel to stop edge gnawing
• Copper mesh: Useful for gaps in irregular masonry or stucco surfaces common in San Antonio and Austin. Squirrels tend to leave copper alone.
• Aluminum flashing: Applied over wood joints at roofline transitions where boards meet and gaps develop
• Steel-screened vent covers: Factory plastic vent covers that come standard on most Texas homes are easy targets. Steel-screened replacements are a long-term fix.

A good technician will also flag conditions that make re-entry likely within the next season or two: live oak branches hanging close to the roofline, rotting fascia that will fail before next summer, or missing drip edge that lets both water and animals behind the first row of shingles. Trimming trees well back from the roof removes the squirrel's primary access route.

In Houston and the Gulf Coast area, wood deteriorates faster due to humidity. In the Dallas-Fort Worth suburbs, large pecan and live oak canopies create heavy squirrel pressure on homes in mature neighborhoods. Round Rock, Plano, and Frisco have seen significant population growth alongside their tree canopy, which brings the wildlife pressure that comes with it. The structural vulnerabilities vary by region, but the animal's behavior is consistent.

Squirrel Removal Cost in Texas

Job cost depends on the size of the structure, the number of entry points, whether attic cleanup is needed, and whether electrical inspection is part of the scope. A straightforward job on a smaller home may fall in the low hundreds of dollars. A larger home with multiple active entry points, significant nesting contamination, or wiring damage to document for an insurance claim will cost more. Industry ranges for full exclusion work, cleanup, and follow-up visits typically fall between a few hundred and well over a thousand dollars.

No honest company can price a job accurately over the phone. The entry points, the extent of nesting, and the condition of the roofline all affect the number. Any reputable company offers a free on-site inspection before quoting. Some jobs qualify for homeowner's insurance coverage if the damage is documented correctly. Ask about that at the inspection, because the documentation requirements vary by carrier.

Squirrels do not slow down once they find a way in. The gnawing continues while you are weighing your options. If you are hearing activity above your ceiling, the right move is a professional inspection to locate every entry point, check for nesting young, assess any existing damage, and give you an accurate picture of what removal and sealing involves. Catching it early costs less and causes less disruption than waiting until the damage compounds.

Frequently asked questions

Related reading

• What Is That Scratching in the Attic?
• Signs of Wildlife in Your Attic or Walls
• How Much Does Wildlife Removal Cost in Texas?