How to Get Rid of an Armadillo in Your Yard: Traps & Deterrents

Learning how to get rid of an armadillo in your yard requires understanding that these nocturnal foragers are not malicious pests destroying your landscaping out of spite. The nine-banded armadillo (Dasypus novemcinctus) is strictly food-driven. When you see 3-to-5-inch deep conical holes scattered across your turf, you are looking at the aftermath of a highly efficient insect hunt. Armadillos possess an extraordinary sense of smell, capable of detecting grubs and larvae up to eight inches beneath the soil surface. To permanently evict them, you must dismantle their food supply, block their access, and utilize strategic trapping when deterrents fail.

The Root Cause: Why Armadillos Target Your Lawn

Armadillos do not eat plant roots, vegetables, or ornamental foliage. The damage they cause to root systems is purely collateral, resulting from their aggressive digging for white grubs, earthworms, and soil-dwelling insects. A single adult armadillo can consume up to 40,000 insects in a single season. If your yard has an active grub population—particularly Japanese beetle or June bug larvae—your lawn essentially serves as an all-you-can-eat buffet. Attempting to trap or repel an armadillo without first addressing the underlying insect infestation is a temporary fix; a new armadillo will simply follow the scent trail to your grub-rich soil within weeks.

Phase 1: Eradicate the Food Source (Grub & Insect Control)

The most effective long-term deterrent is making your yard ecologically unappealing. You must eliminate the soil-dwelling insects that attract armadillos in the first place. This requires a two-pronged approach targeting both the larvae and the adult beetles.

Chemical vs. Biological Grub Treatments

For immediate knockdown of an active infestation, synthetic insecticides containing Trichlorfon (e.g., Dylox) or Chlorantraniliprole (e.g., Scotts GrubEx1) are the industry standard. Chlorantraniliprole is highly favored by turf professionals because it requires no watering-in period and has a low toxicity profile for mammals and pollinators. Expect to pay between $25 and $40 for a 5,000-square-foot coverage bag.

For homeowners preferring organic lawn care, Milky Spore (Paenibacillus popilliae) or Bt galleriae (Bacillus thuringiensis galleriae) are viable biological controls. Milky spore specifically targets Japanese beetle grubs and takes 2 to 3 years to fully establish in the soil, but once established, it provides up to 15 years of continuous control. Bt galleriae works much faster, paralyzing the grubs' digestive systems within days of ingestion, though it requires annual reapplication.

Phase 2: Physical Exclusion Fencing Specifications

If grub control alone does not stop the digging, or if neighboring properties harbor heavy insect populations, physical exclusion is mandatory. Standard privacy fences and chain-link barriers are entirely useless against armadillos, as they are prolific burrowers capable of digging through loose soil in minutes. According to the Internet Center for Wildlife Damage Management, effective armadillo fencing must be engineered specifically to counter their burrowing mechanics.

The critical failure point in most DIY exclusion attempts is the burial angle. Armadillos dig straight down when they encounter a barrier. If your fence is buried straight down, they will simply dig beneath it. You must bend the bottom 12 to 18 inches of the 1/2-inch hardware cloth outward, away from the yard, at a strict 45-degree angle. When the armadillo smells insects on the other side and attempts to dig under the barrier, it will hit the angled wire mesh and lack the cognitive ability to back up and dig further away from the fence line.

Phase 3: Strategic Live Trapping Techniques

When exclusion is impractical due to property size, live trapping becomes necessary. The Texas A&M AgriLife Extension notes that armadillos are notoriously difficult to trap using standard methods because they do not respond to traditional visual or scent lures like peanut butter or cat food. They are strictly insectivores and omnivores with a preference for decaying organic matter.

Selecting the Right Trap

Use a heavy-duty, two-door live trap measuring at least 32 x 12 x 12 inches. The Havahart Model 1089 is the preferred standard among wildlife control operators. Smaller traps will result in the armadillo triggering the pan without fully entering, while larger traps may lack the sensitivity required for their cautious foraging gait. Expect to invest $60 to $85 in a quality galvanized steel trap that resists rust from constant ground moisture.

The V-Board Funnel Method

Because armadillos have poor eyesight, they navigate by following physical edges, such as foundations, fence lines, and retaining walls. You can exploit this behavior using the V-board funnel technique:

1. Identify the Runway: Locate the primary path the armadillo uses to enter your yard or the area between two active burrows.
2. Set the Trap: Place the Havahart trap directly in the center of this runway, ensuring the soil beneath it is level so the trigger pan functions correctly.
3. Build the Funnel: Take two 8-foot long wooden boards (1x6 or 1x8 lumber) and arrange them in a 'V' shape, with the narrow end of the 'V' resting directly against the trap doors.
4. Anchor the Boards: Stake the boards firmly into the ground. The armadillo, following the edge of the board, will be funneled directly into the trap.
5. Baiting: Place overripe bananas, fermented fruit, or a commercial mealworm bait paste deep inside the trap, behind the trigger pan. Do not use meat or standard mammal baits.

Phase 4: Repellents and Habitat Modification

While trapping and fencing offer definitive solutions, repellents can serve as a supplementary layer of defense, particularly for smaller garden beds. Castor oil-based repellents, such as Bonide MoleMax or Tomcat Mole & Gopher Repellent, work by coating the soil and the insects within it with a foul-tasting, laxative-inducing oil. When the armadillo consumes the tainted grubs, it experiences severe gastrointestinal distress and learns to avoid the area. Apply at a rate of 1 pint per 1,000 square feet, watering it deeply into the soil profile immediately after application. Note that castor oil degrades rapidly in high heat and requires reapplication every 3 to 4 weeks during the summer.

Habitat modification also plays a crucial role. Armadillos seek out dense, moist environments for burrowing. Clear away thick brush piles, stacked firewood, and excessive leaf litter near your home's foundation. Reduce your irrigation schedule to allow the top inch of soil to dry out between waterings; armadillos prefer digging in soft, moist soil, and hard, dry clay significantly increases their caloric expenditure, prompting them to move to easier foraging grounds.

Legal and Relocation Realities

Frequently Asked Questions

Do ultrasonic pest repellers work on armadillos?

No. Ultrasonic devices are entirely ineffective against armadillos. These devices rely on disrupting the auditory senses of rodents, but armadillos rely almost exclusively on their highly developed olfactory system (sense of smell) to navigate and forage. Furthermore, ultrasonic waves cannot penetrate soil, rendering them useless against a burrowing animal.

Can I use mothballs to keep armadillos out of my yard?

Using mothballs (naphthalene or paradichlorobenzene) outdoors is a violation of federal pesticide law and is highly toxic to pets, children, and local groundwater. While the strong odor might temporarily deter an armadillo, the environmental and legal risks far outweigh any marginal, short-term benefit. Stick to EPA-registered castor oil formulations for scent-based deterrence.

How deep do armadillo burrows go?

While their foraging holes are only 3 to 5 inches deep, their primary nesting burrows can extend up to 15 feet in length and reach depths of 5 to 7 feet below the surface. When filling abandoned burrows in your yard, do not simply cap the top with dirt. Fill the shaft with gravel or crushed stone before topping with soil to prevent the tunnel from collapsing and creating a sinkhole hazard for humans and pets.