How To Catch A Flying Squirrel: Professional Trapping And Exclusion Guide

Safely catching a flying squirrel requires utilizing specialized live-capture repeater traps or one-way exclusion doors installed directly over active entry points. Effective capture depends on identifying primary ingress gaps as small as 0.5 inches and using high-protein baits like peanut butter and pecans to lure these nocturnal rodents into 5x5x18-inch wire mesh enclosures.

Pre-Operation Assessment and Professional Equipment Checklist

Successful flying squirrel remediation is not merely about the capture; it is a technical process of identification, containment, and exclusion. Unlike the common Eastern Gray Squirrel, flying squirrels (Glaucomys volans and Glaucomys sabrinus) are strictly nocturnal and highly social. If you hear scurrying in your attic specifically between the hours of dusk and dawn, you are likely dealing with a colony rather than a solitary individual. Before deploying hardware, you must conduct a full perimeter sweep of the structure’s roofline, focusing on construction gaps, gable vents, and chimney flashing.

The following equipment and benchmarks are necessary for a professional-grade extraction:

• Trapping Hardware: Multi-catch repeater traps (e.g., 3.5 x 3.5 x 24-inch or 5 x 5 x 18-inch) are preferred over single-catch traps because flying squirrels often travel in groups. One-way exclusion doors (excluders) with 1/4-inch hardware cloth flanges are the industry standard for non-lethal removal.
• Bait and Attractants: Professional-grade squirrel paste, organic peanut butter, shelled pecans, sunflower seeds, and a drop of vanilla extract or apple bitter to serve as a long-range olfactory lure.
• Exclusion Materials: 16 or 19-gauge galvanized 1/4-inch hardware cloth, exterior-grade silicone caulk, stainless steel wool (to prevent gnawing), and high-expansion foam for deep cavity filling.
• Safety Gear: HEPA-filtered respirator (N95 minimum) to protect against Histoplasmosis or hantavirus found in squirrel droppings, heavy-duty nitrile gloves, and a high-lumen headlamp for night-time attic inspections.
• Estimated Duration: 5 to 10 days for full colony extraction, depending on the population size and the number of secondary entry points.

Executing a Precise Capture and Exclusion Protocol

Step 1: Comprehensive Site Inspection and Entry Point Identification

Flying squirrels can compress their skeletal structures to fit through any opening wider than 0.5 inches, roughly the size of a human thumb. Start your inspection at the "highest point of contact"—the roofline. Examine the fascia boards, soffit returns, and the junctions where rooflines meet. Look for "rub marks," which are dark, greasy stains left by the oils in the squirrel’s fur as they squeeze through an opening.

Identify every potential exit and entry point. If you find multiple holes, you must seal all but the "primary" hole—the one with the most significant staining or visible traffic. This forces the entire colony to use a single exit, which is where you will focus your trapping efforts.

Step 2: Preparing the Primary Capture Site

Once the primary hole is identified, prepare the surrounding area to support the weight of a trap or an excluder. If the wood is rotted, you may need to screw a temporary plywood mounting plate over the area. Ensure that there are no secondary "backup" holes within a three-foot radius.

Pro-Tip: Check for "juvenile" presence before sealing. In North America, flying squirrels typically have two litters per year (spring and late summer). If you trap the mother and leave flightless young behind, they will die in your walls, causing secondary pest issues and significant odor.

Step 3: Trap Selection and Strategic Pre-Baiting

For live capture, use a repeater trap. These traps feature a one-way gravity door that allows multiple squirrels to enter but none to exit.

1. Placement: Secure the trap directly to the structure or on a flat section of the roof near the entry point. Use zip ties or mounting screws to ensure the trap does not shift or fall when the animals enter.
2. Pre-Baiting: For the first 48 hours, wire the trap doors open. Place bait (peanut butter mixed with seeds) at the entrance and in the rear of the trap. This "conditions" the squirrels to view the trap as a safe food source, overcoming their natural neophobia (fear of new objects).
3. Setting the Trigger: On the third night, remove the wires holding the doors open and apply a fresh "trail" of bait leading into the back of the trap.

Step 4: Monitoring and Managing the Capture

Flying squirrels have high metabolic rates and can succumb to stress or dehydration quickly if left in a trap during the heat of the day. You must check the traps at least twice daily—once at dawn and once at dusk.

• If using a live trap, have a transport cage ready.
• If using a one-way exclusion door, monitor the "dust test" (sprinkling flour at the exit) to see if any tracks appear, indicating that animals are still exiting.

Warning: Check your local and state wildlife regulations. Many jurisdictions prohibit the relocation of wildlife due to the spread of disease or the high mortality rate of relocated animals. In such areas, exclusion (letting them out through a one-way door and sealing the hole) is the only legal DIY method.

Step 5: Permanent Exclusion and Remediation

Once you are confident the attic is empty—typically after three consecutive nights of zero activity—remove the trap or excluder.

1. Sealing: Patch the entry point with 1/4-inch galvanized hardware cloth, extending the mesh at least two inches beyond the edges of the hole. Cover the mesh with wood filler or permanent construction materials to match the home’s exterior.
2. Decontamination: Wear your respirator and remove any visible latrines (accumulated droppings). Use an enzyme-based cleaner to break down pheromone trails. Flying squirrels follow the scent of previous inhabitants; failing to neutralize the odor will attract a new colony within months.

Wildlife Hardware and Capture Specifications

Overcoming Common Trapping Obstacles and Field Fixes

Capture operations often face variables that lead to failure. Addressing these technical hurdles early ensures a successful extraction.

• Trap Avoidance (Neophobia)

  
  
  
  • Root Cause: The squirrels perceive the metallic scent or the new visual profile of the trap as a threat.
  • Actionable Fix: Camouflage the trap with local vegetation or pieces of bark. Additionally, "season" new traps by leaving them outside in the dirt for a week to remove the factory oil scent before deployment.

• Non-Target Captures (Birds and Gray Squirrels)

  
  
  
  • Root Cause: The bait is attractive to diurnal species that frequent the roof during the day.
  • Actionable Fix: Only "set" the trap triggers 30 minutes before sunset and "unset" them at sunrise. This ensures the trap is only active when the nocturnal flying squirrels are moving.

• Continuous Re-Infestation Post-Exclusion

  
  
  
  • Root Cause: Failure to identify secondary entry points or "soft" spots like rotted rake boards or unsecured ridge vents.
  • Actionable Fix: Perform a "smoke test" or use a high-powered thermal camera on a cold night to identify heat loss areas. These heat signatures indicate where air (and squirrels) can escape the building envelope.

Frequently Asked Questions

What is the best bait for a flying squirrel trap?

The most effective bait is a combination of peanut butter and shelled pecans or walnuts. Flying squirrels are attracted to high-fat, high-protein scents; adding a drop of vanilla extract can enhance the lure's range in urban environments with competing food sources.

Can flying squirrels chew through hardware cloth?

No, flying squirrels cannot chew through 19-gauge or 16-gauge galvanized steel hardware cloth. It is essential to use a 1/4-inch mesh size, as they can easily squeeze through standard 1/2-inch or 1-inch chicken wire or plastic mesh.

Why am I catching nothing when I can hear them in the attic?

This usually occurs when the trap is placed too far from the active run or the squirrels have discovered a secondary entry point you missed. Ensure the trap is located directly on their "superhighway"—the specific beam or roofline edge they use to travel—and verify that all other holes are sealed.

How far should I relocate a flying squirrel?

If legal in your area, you must relocate them at least 5 to 10 miles away, across a significant geographic barrier like a river or a major highway. Because they are highly navigational, any distance shorter than this often results in the animal returning to your attic within 48 hours.

Professional Wildlife Management Integration

Effective flying squirrel control requires a transition from reactive trapping to proactive structural exclusion. For long-term protection, conduct an annual inspection of your home’s roofline and seal any gaps larger than a dime to maintain a rodent-proof building envelope.