Dealing with squirrels inside your walls feels urgent and stressful. You want quiet, safety, and a fixed house. You also want solutions that keep you out of legal trouble and avoid suffering for animals. Below I offer clear steps you can take now, what to expect, and when to call professionals. This advice is based on my overall experience helping homeowners deal with nuisance wildlife and property repairs.
Why you should avoid lethal methods
Squirrels are wild animals. Trying to kill them can cause prolonged suffering, spread disease, and break local laws. You can also cause more damage to your home if an animal dies inside a wall. Many regions protect wildlife or have regulations about how to remove animals. Do not attempt lethal control. Instead, use humane removal and exclusion methods that solve the problem and reduce the chance of recurrence.
What can go wrong with lethal attempts
The animal can die in a hidden place and cause a foul odor and fly infestation.
You may risk legal penalties depending on local wildlife laws.
You may injure yourself using dangerous tools or chemicals inside a confined space.
Non-lethal methods are usually cheaper and more reliable long term.
First steps you can take right now
Stay calm and gather facts
You need clear facts before you act. Do this first:
Listen at different times of day to confirm times of activity.
Note noises: scratching, scampering, thumping, or cheeping. Squirrels are most active at dawn and dusk, but they can be active day or night if disturbed.
Inspect outside walls for obvious entry points: gaps in eaves, soffits, vents, fascia, roofline, attic vents, chimneys, and exterior wall damage.
Safety first
Never put your hands into holes where you suspect an animal. Bites and scratches can transmit disease.
Keep kids and pets away from the affected area.
Wear gloves and a dust mask if you inspect inside attics or crawlspaces. Old nests and droppings can carry parasites or pathogens.
Humane removal options
Encourage voluntary exit
Squirrels usually enter walls looking for shelter or nesting sites. You can encourage them to leave on their own by making the space uncomfortable without harming them.
What you can do:
Reduce lighting and human activity near the affected wall. Squirrels prefer quiet, covered spaces.
Use bright lights temporarily in the attic or inside the space (not directly at openings) to make the area less attractive. Do this when you detect activity — typically dusk or dawn.
Play intermittent, low-level noise (radio or a speaker) in the space to encourage them to move to an exterior opening. Keep volume low enough not to damage hearing.
Note: These are temporary measures to encourage exit. Do not use ultrasonic devices as a sole solution — they rarely produce consistent results.
One-way exclusion devices (professional recommended)
A humane one-way exclusion lets the animal leave but prevents reentry. Installing these correctly requires care and often a permit.
One-way devices attach over the entry hole. The animal leaves and cannot reenter. You must confirm no young remain inside before sealing the hole permanently.
Legal and ethical requirement: Check local rules. In some places you must wait for juveniles to leave the nest (often a few days) before sealing.
Because these devices must be sized and placed properly, I recommend having a licensed wildlife control professional install them. They also handle inspection and follow-up checks.
Live trapping, proceed with caution
Live trapping can work, but it carries responsibilities:
Use humane cage traps sized for squirrels.
Check traps frequently — at least twice daily.
Do not relocate wildlife yourself unless allowed by your jurisdiction. Many places ban moving wild animals to new areas. Relocation can harm the animal and spread disease.
If you trap, contact animal control or a wildlife rehabilitator for lawful, humane disposition.
If you plan to trap, coordinate with local authorities or wildlife rehabilitators first.
When to call a professional
Call a licensed wildlife control operator or your local animal control if:
You hear continued activity after 24–48 hours of your initial attempts.
You suspect the animals have young inside.
You find signs of chewing on insulation, wiring, or structural components.
You are uncomfortable working in attics, roofs, or tight spaces.
You need proof of humane removal for legal or landlord reasons.
Professionals can:
Safely inspect and locate entrances and nests.
Install exclusion devices properly.
Remove animals without harm.
Repair damage and advise on prevention.
Legal and ethical considerations
Wildlife laws vary. Before trapping, relocating, or removing animals, check:
- Local municipal codes.
- State or regional wildlife regulations.
- Protected species lists.
Failing to follow rules can lead to fines and prosecution. A professional will know local laws and handle permits if needed.
Preventing repeat invasions
The best long-term fix is exclusion and repair. Focus on these areas:
Find and seal entry points
- Inspect roofline, eaves, soffits, vents, flashing, and chimney caps.
- Use durable materials for permanent repairs: metal flashing, galvanized hardware cloth (1/4″ or 1/2″), metal vent covers, or heavy-gauge mesh.
- Repair rotted wood and loose siding.
- Replace damaged vent covers and ensure they sit flush.
Important: Do not permanently seal until you are sure no animals remain inside. Follow one-way exclusion or professional verification.
Protect vulnerable openings
- Install chimney caps and spark arrestors.
- Use metal flashing around roof-air vents and fascia where squirrels can climb.
- Install soffit vent guards and gable vent screens.
Trim vegetation and remove access routes
- Trim tree limbs to keep branches at least 6–8 feet from the roofline. Squirrels jump from trees to roofs.
- Remove or relocate bird feeders that attract squirrels close to the house. Feeders draw squirrels and encourage them to explore your structure.
- Clear ivy and heavy vine growth on walls that creates ladder-like access.
Repair and sanitation after removal
Inspect for damage
- Check insulation, wiring, drywall, and structural wood. Squirrels chew and can create fire risks if they damage electrical wiring.
- Look for nest materials, droppings, and urine. These require careful cleanup.
Clean safely
- Wear gloves, eye protection, and a respirator or N95 mask while removing nest material.
- Bag and seal contaminated insulation and nest debris for disposal.
- Disinfect surfaces with a household disinfectant suitable for porous materials. Follow label instructions.
- Consider hiring a professional restoration company for significant contamination or odor.
Alternatives to removal if you can’t access the wall immediately
If immediate removal or professional help is not possible:
- Create noise, light, and odor deterrents to encourage exit (temporary).
- Remove attractants like food and pet bowls from the area.
- Monitor activity closely and avoid sealing any openings.
Health risks and what to watch for
Squirrels can carry fleas, ticks, and parasites. They can also bring mold or mite issues into attic insulation. If you have bites or scratches, seek medical attention. If you see signs of rabies (very rare in squirrels but still possible), contact local health authorities.
DIY checklist (humane approach)
- Confirm species and activity times.
- Inspect exterior for likely entry points.
- Use non-harmful deterrents to encourage exit.
- If practical, install a one-way exclusion device or have a pro do it.
- Wait and confirm no further activity for 48–72 hours.
- Seal entry points permanently after confirming no animals remain.
- Repair any damage and clean contaminated areas safely.
- Take prevention steps: trim trees, secure feeders, install caps and guards.
Cost and time expectations
- DIY inspection and temporary deterrents: low cost, a few hours to a couple days.
- Professional exclusion and repair: cost varies by region, complexity, and damage. Expect varying quotes; get multiple estimates.
- Repairs to insulation, wiring, and drywall will increase costs if significant damage exists.
Final notes and next steps
I cannot provide guidance on killing animals. Instead, use humane removal and exclusion. This approach solves the problem, avoids legal trouble, and prevents future damage.