How to Get Rid of Raccoons Under Your House

Raccoons seeking shelter often target the open spaces beneath homes, such as crawl spaces, turning them into dens that lead to structural damage, foul odors, and health risks from droppings. Homeowners can address this issue through systematic inspection, humane eviction methods, and long-term prevention without causing harm to the animals or violating local wildlife laws.

Recognizing Signs of Raccoon Activity Below Your Foundation

Before taking action, confirm raccoon presence to avoid misidentifying other wildlife. Common indicators include scattered debris like twigs or leaves near foundation vents, greasy rub marks on entry points from their fur, and cylindrical droppings about 2-3 inches long with rounded ends. Noises such as scratching, thumping, or chittering at night signal active nesting, while a musky odor or urine stains under the home confirm occupation.

Visual cues extend to the yard: overturned trash, raided pet food bowls, or dug-up lawns indicate foraging patterns leading to your structure. During daylight, check for paw prints with five toes and claw marks around suspected access points. These signs help pinpoint the problem early, preventing escalation.

Conducting a Thorough Property Inspection

Start with a daytime walkthrough around your home’s perimeter, focusing on crawl space vents, gaps in skirting or lattice, and any holes in the foundation larger than 4 inches—raccoons squeeze through surprisingly small openings. Use a flashlight to peer under the house for nests made of leaves, insulation, or shredded materials, and note latrines (communal defecation areas).

Extend the check to roofs, chimneys, and overhanging trees that provide jump-off points. Document findings with photos for reference or professional consultation. Safety first: wear gloves, a mask, and sturdy boots to avoid direct contact with waste, which can carry roundworm parasites hazardous to humans and pets.

• Examine foundation cracks and vent screens for chew marks or bends.
• Inspect deck or porch undersides for burrowed entries.
• Look for tracks in soft soil near water sources like leaky faucets.
• Check attic access if sounds suggest multi-level infestation.

Humane Eviction Techniques for Crawl Spaces

Once identified, employ non-lethal methods prioritizing animal welfare. Install one-way exclusion doors over primary entry points—these devices allow raccoons to exit but block re-entry. Position them during evening hours when activity peaks, ensuring no young are trapped inside; spring and early summer require extra caution for mothers with kits.

Monitor daily with trail cameras if possible, confirming all animals have left within 3-7 days before permanent sealing. Avoid live traps under homes due to space constraints and stress risks; professionals often handle relocation if needed, adhering to state regulations on wildlife handling.

Sealing Access Points Permanently

After eviction, fortify vulnerabilities with raccoon-proof materials. Cover vents and gaps using 1/4-inch hardware cloth or galvanized steel mesh secured by heavy-duty staples or screws—avoid chicken wire, which they chew through. For foundation holes, apply concrete patches or metal flashing angled outward to deter climbing.

Enclose porch undersides with lattice backed by mesh, extending 12 inches underground to block digging. Install chimney caps and trim branches within 6 feet of the roofline. These barriers create an impenetrable perimeter, essential for preventing reinfestation.

Deploying Repellents and Deterrents Effectively

Enhance exclusion with sensory repellents exploiting raccoons’ aversions. Scatter ammonia-soaked rags or commercial predator urine around entries—the pungent smells mimic threats. Motion-activated sprinklers deliver startling water bursts, while ultrasonic emitters produce irritating high-frequency sounds inaudible to humans.

Natural options like cayenne pepper, garlic powder, or Epsom salts sprinkled along paths disrupt foraging. Bright LED floodlights on timers illuminate nocturnal paths, as raccoons prefer darkness. Rotate methods to prevent adaptation, reapplying after rain.

• Ammonia rags: Refresh every 2-3 days.
• Motion sprinklers: Position near high-traffic zones.
• Commercial granules: Reapply bi-weekly.

Eliminating Attractants Around Your Property

Raccoons target easy meals and shelter, so remove incentives. Secure garbage with bungee cords or locking lids, storing bins in garages overnight. Harvest fallen fruit promptly and feed pets indoors; eliminate bird feeders that spill seed.

Fix leaky faucets and grade soil to drain puddles, as standing water draws them. Clear yard clutter like woodpiles, leaf accumulations, and overgrown shrubs that offer cover. Mow lawns regularly to expose grubs, their favored snack, reducing appeal.

Cleaning and Sanitizing the Affected Area

Post-removal, decontaminate to eliminate health hazards. Ventilate the crawl space, then remove bulk waste with shovels into sealed bags. Apply enzyme-based cleaners to break down urine and feces, followed by disinfection using a 10% bleach solution or commercial biocides safe for wood.

Replace heavily soiled insulation or vapor barriers. Professionals use HEPA vacuums and foggers for thorough sanitization, preventing parasite spread. Allow 48 hours drying before inspections.

Long-Term Prevention Strategies

Sustain success through ongoing vigilance. Schedule bi-annual perimeter checks, especially pre-winter when raccoons seek dens. Maintain fencing at least 4 feet high with buried aprons or coyote rollers to foil climbers.

Landscaping tweaks like thorny plants near foundations or gravel borders deter paw traffic. Community efforts, such as neighborhood cleanups, reduce regional populations. Educate on local laws prohibiting poisons or relocation without permits.

When to Call Wildlife Professionals

DIY suits mild cases, but hire experts for large families, structural damage, or dead-end crawl spaces. Certified trappers use infrared cameras for precise eviction, guarantee work, and navigate regulations. Expect costs of $400-1,200 depending on scope, with warranties against return visits.

Search for licensed operators via state wildlife agencies; verify humane credentials and insurance.

Frequently Asked Questions (FAQs)

Can raccoons damage my home’s foundation?

Yes, their burrowing and chewing weaken skirting and insulation, potentially causing moisture issues or pest entry.

Is it legal to trap and relocate raccoons myself?

Laws vary; many states require permits or prohibit relocation to avoid disease spread—consult local authorities.

How long does eviction take?

Typically 3-10 days with one-way doors, longer if kits are present.

Do mothballs work against raccoons?

They provide temporary deterrence via odor but are toxic if ingested and illegal indoors—use sparingly outdoors.

What if raccoons return after sealing?

Re-inspect for missed entries; combine with deterrents and remove food sources.