How To Trap A Possum: The Definitive Professional Guide To Effective Removal

To effectively trap a possum, utilize a large live-cage trap measuring at least 32 by 10 by 12 inches, baited with high-scent attractants like sardines or marshmallows, and positioned along established travel paths such as fence lines or building foundations. Success requires stabilizing the trap on level ground, camouflaging the metal floor with natural debris, and adhering to local wildlife ordinances regarding relocation and release.

Pre-Trapping Preparation and Equipment Requirements

Before initiating a trapping program, you must understand the biological behaviors of the North American Opossum (Didelphis virginiana). As nocturnal marsupials, possums are opportunistic scavengers that follow predictable paths between their dens and food sources. Effective trapping is not merely about baiting a cage; it is a tactical exercise in environmental analysis and mechanical precision.

You must first verify the legality of trapping in your specific jurisdiction. Many regions classify opossums as "fur-bearers" or "nuisance wildlife," which dictates specific rules for trap types, check frequencies, and relocation distances. In several states, it is illegal to relocate a possum to a different property because it increases the risk of spreading diseases like Equine Protozoal Myeloencephalitis (EPM) or simply results in the animal's death due to territorial disputes with existing wildlife.

Essential Gear and Standards Checklist

• Live-Catch Cage Trap: Use a professional-grade, single-door or double-door wire mesh trap. The industry standard for adult opossums is a 32" x 10" x 12" or 36" x 12" x 12" model. Smaller squirrel-sized traps will result in "tail-clipped" animals or mechanical failure.
• Bait Selection: High-protein options (sardines, canned cat food, or chicken wings) or high-sugar options (marshmallows, sliced apples, or jelly-covered bread). Sweets are preferred in residential areas to avoid catching neighborhood cats.
• Safety Equipment: Heavy-duty leather bite-resistant gloves and a thick canvas tarp or blanket for covering the trap after capture to minimize animal stress.
• Sanitization Supplies: A 10% bleach solution or an enzyme-based cleaner to decontaminate the trap and the capture site post-removal.
• Foundational Knowledge: Identification of tracks (five-toed, hand-like prints with a distinct thumb) and scat (typically 1–3 inches long, tapered, and containing visible seeds or fur).
• Estimated Duration: 24 to 72 hours for initial capture.
• Budget Benchmark: $60 – $150 for high-quality gear.

Professional Protocol for Opossum Trapping and Removal

Step 1: Site Inspection and Path Identification

Successful trapping begins with identifying the "runs" or travel corridors the animal uses. Opossums are creatures of habit and prefer to travel along structural edges. Look for "rub marks"—dark, oily stains on wood or siding where the animal’s fur has repeatedly made contact.

Examine the perimeter of your home, specifically under decks, crawlspace vents, and near low-hanging fruit trees. Possums often use fence rails as elevated highways. If you find a hole leading under a shed or porch, perform a "soft block" test: loosely stuff a wad of newspaper into the hole. If the paper is pushed out overnight, the entry point is active and serves as the primary location for trap placement.

Step 2: Trap Selection and Mechanical Preparation

Standardize your equipment by using a heavy-gauge galvanized steel trap. Before deployment, inspect the trigger sensitivity. A trap that is too difficult to trip will allow the possum to eat the bait and exit, while a "hair-trigger" might fire due to vibrations or wind.

Pro-Tip: Wash the trap with high-pressure water and an unscented soap before use. Opossums have a keen sense of smell; the scent of a previously stressed animal or human oils on the metal can cause "trap shyness."

If using a single-door trap, ensure the rear of the cage is positioned against a solid surface (like a wall) to prevent the animal from reaching through the wire mesh to grab the bait from the outside.

Step 3: Strategic Baiting and the Trailing Method

The "trailing" method is the professional secret to ensuring an animal enters the trap confidently. Instead of placing all the bait behind the trigger plate, use a scent trail.

1. Place a tiny amount of bait (the "appetizer") about 12 inches in front of the trap entrance.
2. Place a second, slightly larger portion just inside the door.
3. Place the "main course" at the very back of the trap, past the trigger plate.

For the main bait, use something that cannot be easily dragged out. Smear peanut butter or jelly on a piece of cardboard and wire it to the back of the cage. This forces the animal to manipulate the object, ensuring the trigger plate is fully depressed.

Step 4: Setting, Weighting, and Camouflaging

Once the bait is set, place the trap on a completely level surface. If the trap wobbles when the animal steps inside, the vibration will often spook them before they reach the trigger.

Warning: Never set a trap on an incline or a roof without securing it. A trapped, thrashing animal can shift the center of gravity, causing the trap to roll or fall, leading to severe injury or death.

To increase the success rate, camouflage the metal floor. Possums are sensitive to the feel of wire mesh under their paws. Cover the bottom of the trap with a thin layer of soil, leaves, or grass from the immediate area, making sure the material does not interfere with the movement of the trigger plate.

Step 5: Monitoring and Post-Capture Management

Check the trap at dawn and dusk. Leaving a possum in a cage during the heat of the day is inhumane and can lead to capture-induced stress or hyperthermia.

When you find a captured possum, it may "play dead" (thanatosis). This is an involuntary physiological state, not a choice. The animal may also hiss or show its 50 sharp teeth—the most of any North American mammal. Approach the trap slowly and cover it immediately with a tarp. This darkness calms the animal and prevents it from seeing you as a predator.

Wildlife Trap Specifications and Bait Selection Matrix

The following table provides the technical parameters for selecting equipment based on the specific environmental conditions and the target animal's maturity.

Common Trapping Failures and Professional Field Fixes

Understanding why a trap failed is as important as knowing how to set it. Below are the primary failure modes encountered in the field.

• Scenario: The "Bait Thief" (Bait is gone, trap is still open)

  
  
  
  • Root Cause: The animal reached through the side mesh or the trigger was set too heavy for a smaller juvenile possum.
  • Actionable Fix: Wrap the back 1/3 of the trap in 1/4-inch hardware cloth (fine mesh) to prevent "pawing" from the outside. Re-calibrate the trigger to a lighter setting by filing the sear or adjusting the tension spring.

• Scenario: Non-Target Capture (Caught a skunk or neighborhood cat)

  
  
  
  • Root Cause: Use of meat-based baits in an area with high domestic animal activity or failure to use species-specific lures.
  • Actionable Fix: Switch to "sweet" baits (honey, jam, marshmallows). If a skunk is caught, approach with a tarp held in front of you as a shield, slowly drape it over the trap, and open the door remotely using a long string or pole.

• Scenario: Trap Avoidance (Animal walks around the trap)

  
  
  
  • Root Cause: High human scent or the trap is too visible in an open area.
  • Actionable Fix: Create a "funnel" using logs, bricks, or scrap wood to guide the animal directly into the trap mouth. This exploits the possum's natural tendency to walk along edges. Use "de-scenting" spray or leave the trap outdoors for 48 hours before baiting to let it weather.

• Scenario: The "False Fire" (Trap is closed, but empty)

  
  
  
  • Root Cause: Vibrations from wind or a "near miss" where the animal bumped the exterior.
  • Actionable Fix: Place a heavy brick or cinder block on top of the trap to stabilize it against wind and movement. Ensure no debris or long grass is caught in the door hinges.

Frequently Asked Questions

Can I relocate a trapped possum to a local park?

You must check your state’s wildlife laws first, as many states strictly prohibit the relocation of wildlife due to the spread of disease and low survival rates of relocated animals. If legal, relocation should generally occur within a 5-to-10-mile radius in an area with a permanent water source and similar habitat.

Is it safe to handle a possum with my bare hands?

No, you should never handle a wild possum without professional-grade protective equipment. While they are famous for having a low body temperature that makes them resistant to rabies, they can still carry the virus, along with tuberculosis, coccidiosis, and heavy loads of fleas, ticks, and mites.

What is the best time of year to trap a possum?

Late winter and early spring are the most effective times because food is scarce, making them more likely to enter a baited trap. However, be cautious during the spring and summer months, as females may have up to 13 "joeys" in their pouch or clinging to their backs; trapping the mother alone will result in the death of the offspring.

Why do possums hiss and show their teeth when I approach the trap?

This is a defensive display designed to mimic a more dangerous predator. Despite the fearsome appearance of their 50 teeth, opossums are generally non-aggressive and prefer to flee or play dead. The hissing is a bluff, but they will bite if they feel cornered or are touched.

How can I stop more possums from coming after I trap one?

Trapping is a reactive measure; habitat modification is the proactive solution. Secure all trash can lids with bungee cords, pick up fallen fruit from trees, remove outdoor pet food bowls at night, and seal off entry points to decks and crawlspaces with heavy-duty hardware cloth buried 6 inches underground.

Professional Wildlife Management Support

If you have multiple animals or a complex infestation within your home's structural foundations, DIY methods may prove insufficient for long-term exclusion. Contact a certified wildlife damage control professional to perform a full-site audit and implement permanent exclusion barriers.