Nuisance Wildlife Control Operator Certification Exam — Questions and Answers

Question 1: What characteristic of river otter scat (spraint) MOST reliably distinguishes it from mink scat at a shared latrine site?

River otter scat contains exclusively fish scales while mink scat contains only mammal fur and feathers
River otter scat is deposited only underwater while mink scat is always found on dry surfaces
River otter scat is considerably larger in diameter and often has a mucilaginous texture compared to the much smaller, twisted mink scat (Correct answer)
Mink scat has a sweet, fish-like odor while river otter scat is odorless

Correct answer: River otter scat is considerably larger in diameter and often has a mucilaginous texture compared to the much smaller, twisted mink scat

River otter spraints are roughly 3/4 to 1 inch in diameter and frequently have a jelly-like, mucilaginous consistency. Mink scat is much smaller (about 1/4 inch diameter), dark, and twisted with tapered ends. Both species may deposit fish remains, making content alone an unreliable separator; size and texture are more diagnostic.

Question 2: Parallel claw marks approximately 2-3 inches apart scratched vertically on a utility pole indicate which animal?

Raccoon (Correct answer)
Squirrel
Domestic cat
Black bear

Correct answer: Raccoon

Raccoon claw marks are 2-3 inches between marks, reflecting their paw width, as parallel vertical scratches.

Question 3: A homeowner reports that squirrels are repeatedly gaining access by running along power lines to the roofline. Which habitat modification addresses this pathway?

Installing plastic pipe sleeves around tree trunks within 10 feet of the structure
Attaching sheet-metal flashing to the fascia boards
Trimming all trees within 20 feet of the structure to below roof height
Coordinating with the utility company to install a plastic conduit sleeve on the service line (Correct answer)

Correct answer: Coordinating with the utility company to install a plastic conduit sleeve on the service line

Utility lines are a common highway for squirrels. A plastic conduit sleeve (PVC pipe split lengthwise and placed around the wire) spins freely, preventing squirrels from walking across it. Tree trimming and trunk baffles address tree routes but not aerial utility pathways.

Question 4: What vaccination is recommended for NWCO operators who regularly handle wildlife?

Tetanus only
Annual flu vaccine
No vaccination is available
Pre-exposure rabies vaccination series (3 doses) with periodic titer checks (Correct answer)

Correct answer: Pre-exposure rabies vaccination series (3 doses) with periodic titer checks

Pre-exposure rabies vaccination provides baseline immunity and simplifies post-exposure treatment to just two booster doses.

Question 5: During a site inspection, a NWCO finds fresh droppings, rub marks, and gnawed wood near a foundation. These are collectively referred to as:

Sign or field sign (Correct answer)
Damage records
Habitat features
Pest indicators

Correct answer: Sign or field sign

Evidence of wildlife activity such as droppings, tracks, rub marks, and gnawing is collectively called 'sign' or 'field sign,' used to confirm species presence and activity level.

Question 6: According to AVMA Guidelines, which method is acceptable for euthanasia of small mammals captured during nuisance wildlife operations?

Decompression
Carbon dioxide (CO2) exposure in a properly designed chamber (Correct answer)
Hypothermia (freezing)
Drowning

Correct answer: Carbon dioxide (CO2) exposure in a properly designed chamber

CO2 euthanasia in a properly designed chamber is listed as acceptable when performed according to AVMA guidelines.

Question 7: Can an NWCO operator cross state lines to perform wildlife control in a neighboring state?

Only for federally protected species
No, each state has independent licensing with no reciprocity (Correct answer)
Only with client permission
Yes, licenses are recognized in all states

Correct answer: No, each state has independent licensing with no reciprocity

NWCO licenses are state-specific with no reciprocity; operators must hold valid licenses in each state where they work.

Question 8: What are zoonotic diseases (zoonoses)?

Diseases that affect both plants and animals.
Diseases that only affect wildlife.
Diseases that people can catch from wildlife. (Correct answer)
Diseases that are transmitted by insects only.

Correct answer: Diseases that people can catch from wildlife.

Explanation: <br> Zoonotic diseases, or zoonoses, are diseases that can be transmitted from animals to humans. These diseases can be caused by bacteria, viruses, parasites, or fungi. Understanding zoonotic diseases is crucial for Nuisance Wildlife Control Operators to ensure they take appropriate precautions to protect themselves and the public from potential health risks associated with wildlife interactions.

Question 9: Which bait station design is required by EPA for outdoor use in residential areas?

Open tray stations
Tamper-resistant stations that resist opening by children and dogs (Correct answer)
Cardboard bait boxes
Bait placed directly in burrows

Correct answer: Tamper-resistant stations that resist opening by children and dogs

EPA requires tamper-resistant bait stations for outdoor residential use to prevent accidental exposure.

Question 10: What is the recommended procedure for an animal captured that appears to have rabies symptoms?

Transport to a veterinarian for treatment
Euthanize and dispose in regular trash
Release immediately
Do not handle directly; contact local animal control or state health department for rabies testing guidance (Correct answer)

Correct answer: Do not handle directly; contact local animal control or state health department for rabies testing guidance

Animals with rabies symptoms should not be handled directly; authorities coordinate rabies testing which requires the intact brain.

Question 11: When setting a price for wildlife control services, which factor is LEAST relevant?

Labor and time required
Cost of materials and equipment
Local market rates and overhead costs
The color of the homeowner's house (Correct answer)

Correct answer: The color of the homeowner's house

Pricing should be based on business costs, labor, materials, and market rates — aesthetic features of the property have no bearing on service pricing.

Question 12: Which of the following situations would most likely require a NWCO to obtain a special permit in addition to their standard Nuisance Wildlife Control license?

Setting traps for a beaver that is flooding a farmer's field. (Correct answer)
Live-capturing opossums from a commercial dumpster area.
Removing a skunk from under a residential deck.
Trapping squirrels that are damaging a homeowner's garden.

Correct answer: Setting traps for a beaver that is flooding a farmer's field.

While standard NWCO licenses cover a wide range of common nuisance species, certain animals, particularly furbearers with economic value or species with significant management plans, often require an additional, specific permit. In many states, species like beaver, otter, black bear, or deer require a special depredation permit, often issued by a regional wildlife office, even for licensed NWCOs. Squirrels, skunks, and opossums are typically covered under the general NWCO license.

Question 13: What is the primary purpose of using a 'stop-loss' device on a foothold trap?

To prevent a captured animal from twisting off or pulling free of the trap (Correct answer)
To slow the closing speed of the jaws for a more humane catch
To prevent the trap from triggering on very light animals
To anchor the bait securely inside the trap pan

Correct answer: To prevent a captured animal from twisting off or pulling free of the trap

A stop-loss device — typically a loop of wire or a secondary catch mechanism attached near the foot — prevents a captured animal from wrenching or chewing its limb free ('wring-off'), ensuring the animal is held securely until the operator checks the trap.

Question 14: What damage pattern on fascia board most likely indicates squirrel gnawing for entry?

Clean-edged, circular holes approximately 2-3 inches in diameter with tooth marks (Correct answer)
Paint peeling in large sheets
Small pinholes scattered across the surface
Long, shallow vertical scratches

Correct answer: Clean-edged, circular holes approximately 2-3 inches in diameter with tooth marks

Squirrel gnaw holes are characteristically clean-edged, circular, approximately 2-3 inches, with visible parallel tooth marks.

Question 15: What is the legal status of Virginia opossums in most US states for nuisance control?

Classified as furbearer or unprotected species, controllable with appropriate state permits (Correct answer)
Classified as invasive with no restrictions
Protected under the Endangered Species Act
Federally protected

Correct answer: Classified as furbearer or unprotected species, controllable with appropriate state permits

Virginia opossums are furbearers or unprotected wildlife in most states, allowing control with appropriate permits.

Question 16: Which practice BEST demonstrates integrated damage prevention for a residential homeowner with repeated rodent intrusions?

Set live traps outside and release rodents in a nearby park
Spray repellent around the foundation every week
Seal all entry points larger than 1/4 inch, remove food sources, and maintain snap traps at interior pressure points (Correct answer)
Place poison bait stations in the living areas

Correct answer: Seal all entry points larger than 1/4 inch, remove food sources, and maintain snap traps at interior pressure points

Effective rodent IPM combines exclusion to block entry, sanitation to eliminate attractants, and trapping inside where rodents travel, creating a multi-layered solution.

Question 17: Which statement best describes the legal principle of 'state ownership doctrine' as it applies to nuisance wildlife control?

Wildlife is held in trust by the state government on behalf of all citizens, meaning individuals do not own wild animals even on their property (Correct answer)
NWCO operators assume personal ownership of any animal they capture
Property owners have full legal title to all wildlife residing on their land
Federal agencies have exclusive authority over all wildlife regardless of state law

Correct answer: Wildlife is held in trust by the state government on behalf of all citizens, meaning individuals do not own wild animals even on their property

Under the state ownership doctrine, wild animals are considered a public resource held in trust by the state, not private property. This means landowners cannot sell, transfer, or claim ownership of captured wildlife, and NWCO operators must follow state regulations for all disposition decisions.

Question 18: A homeowner used a second-generation anticoagulant rodenticide (SGAR) to control mice around their property. A week later, a hawk is found dead nearby, and a necropsy reveals internal bleeding. This is a classic example of what phenomenon?

Secondary poisoning (Correct answer)
Primary poisoning
Target species resistance
Bait shyness

Correct answer: Secondary poisoning

Secondary poisoning occurs when a predator or scavenger consumes an animal that has already been poisoned by a toxicant. Second-generation anticoagulants (SGARs) are known to pose a high risk of secondary poisoning because they are highly toxic and persist in the tissues of the poisoned animal, which may be consumed by predators like hawks, owls, or foxes before it dies.

Question 19: Which bird species is NOT protected under the federal Migratory Bird Treaty Act and can be legally controlled without a permit?

European starling (Correct answer)
American robin
Barn swallow
Blue jay

Correct answer: European starling

European starlings are an introduced species not protected under the MBTA and can be controlled without a federal permit.

Question 20: When decontaminating a solid, non-porous surface (like a concrete patio) where a raccoon latrine was located, which method is most effective for destroying the highly resistant eggs of Baylisascaris procyonis?

Applying a 10% bleach solution and letting it air dry.
Spraying the surface with a commercial virucide.
Using a propane torch or boiling water to apply extreme heat. (Correct answer)
Scrubbing the area with standard ammonia-based cleaners.

Correct answer: Using a propane torch or boiling water to apply extreme heat.

The eggs of *Baylisascaris procyonis* are extremely resistant to common chemical disinfectants, including bleach and ammonia. The most effective way to kill the eggs on a surface that can withstand it is through the application of extreme heat, such as from a propane torch or boiling water.

Question 21: What is the minimum recommended gauge of hardware cloth for excluding raccoons?

19-gauge (window screen weight)
Any plastic mesh
14-gauge or heavier (Correct answer)
16-gauge

Correct answer: 14-gauge or heavier

14-gauge or heavier is required because raccoons have sufficient strength to tear lighter materials.

Question 22: What should a NWCO provide to a client BEFORE beginning any wildlife control work?

A verbal promise of results
A written contract or service agreement (Correct answer)
A list of wildlife species in the area
A government permit number only

Correct answer: A written contract or service agreement

A written contract protects both the operator and the client by clearly stating the scope of work, methods, costs, and guarantees.

Question 23: Which snake characteristic indicates it is a venomous pit viper in North America?

Triangular-shaped head with visible heat-sensing pits between the eye and nostril (Correct answer)
Round body shape
Smooth, shiny scales
Bright coloration with red and yellow bands

Correct answer: Triangular-shaped head with visible heat-sensing pits between the eye and nostril

Pit vipers have triangular heads and distinctive heat-sensing pit organs located between the eye and nostril on each side.

Question 24: What White-Nose Syndrome precaution must NWCO operators follow when working with bat colonies?

Avoid all contact with bats from October through March
Report any white-colored bats to the EPA
Decontaminate clothing, footwear, and equipment between different bat roost sites (Correct answer)
Spray all bats with antifungal solution

Correct answer: Decontaminate clothing, footwear, and equipment between different bat roost sites

Decontaminating gear between sites prevents operators from spreading the Pseudogymnoascus destructans fungus causing WNS.

Question 25: Which feature distinguishes Mexican free-tailed bats from big brown and little brown bats?

Tail extending visibly beyond the tail membrane (Correct answer)
All three look identical
Wing color pattern
Ear size only

Correct answer: Tail extending visibly beyond the tail membrane

Free-tailed bats have about 1/3 of their tail extending beyond the tail membrane, while other species' tails are fully enclosed.

Question 26: When performing a bat exclusion, a NWCO installs a device over the primary exit point that allows bats to leave the structure but prevents them from re-entering. Which of the following is a common term for this type of device?

A positive-set body-gripper.
A repeater trap.
A bat valve or one-way door. (Correct answer)
A funnel snare.

Correct answer: A bat valve or one-way door.

A bat valve, one-way door, or exclusion tube is specifically designed for bat removal. It creates a passage that bats can easily exit through but cannot navigate to re-enter the structure. This allows for the humane eviction of the entire colony without handling the animals.

Question 27: What is the correct height for a chimney cap to prevent wildlife entry while maintaining proper draft?

12 inches above the roofline
Flush with the chimney top
At least 5 inches above the flue tile with appropriate mesh screening (Correct answer)
Height doesn't matter as long as mesh covers the opening

Correct answer: At least 5 inches above the flue tile with appropriate mesh screening

Chimney caps should extend at least 5 inches above the flue tile with appropriate mesh to exclude wildlife while maintaining draft.

Question 28: How can an operator distinguish a weasel from a chipmunk during a brief glimpse?

They are the same size and shape
Weasels have striped backs
Chipmunks have longer tails
Weasels have a long, slender body with very short legs and sinuous movement; chipmunks are compact with stripes and a bounding gait (Correct answer)

Correct answer: Weasels have a long, slender body with very short legs and sinuous movement; chipmunks are compact with stripes and a bounding gait

The weasel's elongated, snake-like body shape and undulating movement is distinctly different from the chipmunk's compact, striped body with bounding hop.

Question 29: Greasy dark marks along baseboards and at the edges of a small opening indicate which pest?

Snake
Squirrel
Rat or mouse (Correct answer)
Bat

Correct answer: Rat or mouse

Greasy rub marks along baseboards and entry points are characteristic of rodents that follow walls and leave oil from their fur.

Question 30: Fine sawdust-like frass piles beneath a round hole in a wooden beam indicate which pest?

Termites
Carpenter ants
Woodpeckers
Powderpost beetles or wood-boring beetles (Correct answer)

Correct answer: Powderpost beetles or wood-boring beetles

Wood-boring beetles create small, round exit holes with fine powdery frass beneath.

Question 31: Which of the following is a primary advantage of using enclosed, species-specific traps like 'dog-proof' raccoon traps?

They can be left unchecked for up to a week.
They significantly reduce the capture of non-target species. (Correct answer)
They are designed to capture multiple animals at once.
They are the only legal trap type for furbearers in all 50 states.

Correct answer: They significantly reduce the capture of non-target species.

Dog-proof traps have a design where the trigger is inside a small tube or opening, requiring the target animal (like a raccoon) to reach in and pull the trigger. This design makes it very difficult for non-target animals that don't have the same dexterity, such as domestic dogs or cats, to get caught, making them highly selective.

Question 32: Claw marks scratched into the bark of a tree reaching 6 to 8 feet above ground, accompanied by tufts of coarse hair caught in the rough bark, most likely indicate activity by which animal?

White-tailed deer using the tree as an antler rub
Black bear using the tree as a scent-marking post (Correct answer)
Raccoon repeatedly climbing to an overhead den
Porcupine stripping bark for cambium feeding

Correct answer: Black bear using the tree as a scent-marking post

Black bears stand upright and rake their claws down tree trunks as territorial scent-marking behavior, leaving deep parallel gouges well above deer-height and often depositing hair from their shoulders and back.

Question 33: What is the role of a 'threshold' in IPM decision-making for nuisance wildlife?

It defines the level of wildlife activity or damage at which intervention becomes necessary (Correct answer)
It establishes a minimum fee for NWCO services
It determines how many species can be managed per permit
It sets the maximum number of traps allowed per acre

Correct answer: It defines the level of wildlife activity or damage at which intervention becomes necessary

An action threshold defines the point at which pest presence or damage is significant enough to warrant intervention, preventing unnecessary treatments for low-level activity.

Question 34: Which of the following physical deterrents is specifically designed and most effective for preventing large birds like pigeons and gulls from landing and roosting on long, flat surfaces such as building ledges, parapets, and signs?

Bird spikes. (Correct answer)
Aromatic gels that produce a scent birds dislike.
Reflective scare tape.
Ultrasonic repellers that emit high-frequency sounds.

Correct answer: Bird spikes.

Bird spikes are a physical barrier consisting of needle-like rods that make it physically impossible or at least highly uncomfortable for larger birds to land on a surface. They are a standard and highly effective solution for preventing roosting on ledges and similar flat areas.

Question 35: What information should ALWAYS appear on a NWCO's invoice to clients?

The state wildlife agency's phone number
Only the total amount due
A list of all nearby animal shelters
License number, services performed, materials used, and total cost (Correct answer)

Correct answer: License number, services performed, materials used, and total cost

A complete invoice including license number and itemized services provides transparency, supports tax records, and demonstrates regulatory compliance.

Question 36: Which of the following describes a "positive set" in the context of trapping a nuisance mammal?

A set that uses both a visual lure and a scented bait simultaneously.
Using a highly attractive bait that the target animal cannot resist.
A trap that is guaranteed to catch an animal within 24 hours.
Placing a trap directly over a den opening, forcing the animal to enter upon exit. (Correct answer)

Correct answer: Placing a trap directly over a den opening, forcing the animal to enter upon exit.

A positive set involves placing a trap, often a cage or body-gripping trap, directly over the animal's only entry/exit point and using fencing or other materials to funnel the animal into it. [22, 27] This method requires no bait and ensures only the target animal leaving or entering the den is captured.

Question 37: What is the purpose of installing drip edge or metal flashing along the roofline for wildlife exclusion?

To improve roof appearance
Only for water management
To mount security cameras
To seal the gap between roof deck and fascia board where squirrels and bats commonly enter (Correct answer)

Correct answer: To seal the gap between roof deck and fascia board where squirrels and bats commonly enter

Metal flashing seals the construction gap between roof deck and fascia, one of the most common wildlife entry points.

Question 38: Which fumigant is commonly used by NWCOs to control ground squirrels and prairie dogs by introducing gas into burrow systems?

Zinc phosphide dust
Sodium fluoroacetate (1080)
Aluminum phosphide (Correct answer)
Carbon tetrachloride

Correct answer: Aluminum phosphide

Aluminum phosphide reacts with moisture in the soil and burrow air to produce phosphine gas, which is lethal to burrowing rodents. It is a restricted-use pesticide requiring a license and can only be applied by certified applicators.

Question 39: What disease should be suspected in a striped skunk stumbling, circling, and showing no fear of humans during daytime?

Sarcoptic mange
Distemper (Correct answer)
Leptospirosis
Tularemia

Correct answer: Distemper

Neurological signs including stumbling, circling, and loss of fear are classic symptoms of canine distemper virus in skunks.

Question 40: After performing euthanasia on a nuisance animal, what is the essential final step a NWCO must take to ensure the procedure was successful?

Record the time and date of the procedure.
Verify and confirm death by checking for the absence of a heartbeat and respiration. (Correct answer)
Inform the client that the procedure is complete.
Immediately place the carcass in a sealed bag for disposal.

Correct answer: Verify and confirm death by checking for the absence of a heartbeat and respiration.

Confirmation of death is a mandatory step in the euthanasia process. An animal may appear dead but only be unconscious or stunned. Verifying the cessation of vital signs, such as heartbeat and breathing, ensures the animal does not regain consciousness and suffer.

Question 41: What behavioral display MOST reliably distinguishes the spotted skunk from the striped skunk when the animal feels threatened?

The spotted skunk sprays without any prior warning display
The spotted skunk emits a series of loud barking vocalizations before spraying
The striped skunk charges directly toward the threat rather than retreating
The spotted skunk performs a handstand on its front legs with tail raised before releasing its spray (Correct answer)

Correct answer: The spotted skunk performs a handstand on its front legs with tail raised before releasing its spray

Spotted skunks (Spilogale spp.) uniquely perform a handstand — balancing on their front legs with the hindquarters and tail raised toward the threat — before spraying. Striped skunks instead stamp their front feet and arch their back as a warning. The handstand is diagnostic for spotted skunks.

Question 42: What is the recommended decontamination solution for equipment exposed to potentially rabies-contaminated material?

10% sodium hypochlorite (bleach) solution with 10 minutes of contact time (Correct answer)
Rubbing alcohol wipe
Plain water rinse
Vinegar solution

Correct answer: 10% sodium hypochlorite (bleach) solution with 10 minutes of contact time

10% bleach solution with 10 minutes of contact time effectively inactivates the rabies virus on surfaces.

Question 43: An NWCO operator is hired to remove a beaver dam that is flooding a homeowner's property. Which permit is most likely required before breaching or removing the dam?

A Lacey Act transport waiver from the state wildlife agency
A CITES export certificate from the USFWS
A depredation permit from APHIS Wildlife Services
A Section 404 permit from the U.S. Army Corps of Engineers (Correct answer)

Correct answer: A Section 404 permit from the U.S. Army Corps of Engineers

Breaching or removing a beaver dam typically involves filling or altering wetlands and waterways, which falls under Section 404 of the Clean Water Act, administered by the U.S. Army Corps of Engineers. A permit or nationwide permit authorization is usually required.

Question 44: Which landscape modification reduces snake cover near a residential foundation?

Adding a rock wall garden next to the house
Adding thick mulch against the foundation
Planting dense groundcover to the foundation walls
Maintaining a 24-inch gravel or bare-ground buffer between landscaping and the foundation (Correct answer)

Correct answer: Maintaining a 24-inch gravel or bare-ground buffer between landscaping and the foundation

A 24-inch buffer eliminates cover snakes use to travel along foundations and makes them visible to predators.

Question 45: When cleaning a designated raccoon latrine, a NWCO must wear appropriate PPE, including a respirator, to prevent the accidental inhalation or ingestion of microscopic eggs from a parasite known to cause severe neurological damage in humans. What is this parasite?

Baylisascaris procyonis (Raccoon Roundworm) (Correct answer)
Sarcoptes scabiei (Mange mite)
Hantavirus
Giardia lamblia

Correct answer: Baylisascaris procyonis (Raccoon Roundworm)

Baylisascaris procyonis, or raccoon roundworm, is a parasite whose eggs are shed in raccoon feces. [12, 14] If inhaled or ingested by humans, the larvae can migrate to the brain, eyes, and other organs, causing severe and sometimes fatal neurological disease. [16, 21] This makes proper PPE and cleanup procedures at raccoon latrines essential.

Question 46: Which federal agency issues depredation permits for controlling protected migratory birds?

Environmental Protection Agency
Federal Aviation Administration
Department of Agriculture
US Fish and Wildlife Service (Correct answer)

Correct answer: US Fish and Wildlife Service

The US Fish and Wildlife Service administers the MBTA and issues depredation permits for lethal control of protected bird species.

Question 47: What MOST reliably distinguishes Eastern chipmunk burrows from Norway rat burrows around a foundation?

Soil color
Hole size is identical
Time of day used
Chipmunk burrows are clean with no soil pile; rat burrows have a fan of excavated soil (Correct answer)

Correct answer: Chipmunk burrows are clean with no soil pile; rat burrows have a fan of excavated soil

Chipmunks carry excavated soil in cheek pouches, leaving a clean entrance, while rats push soil out creating visible mounds.

Question 48: When using a carbon dioxide (CO2) chamber for euthanasia, which of the following is a critical factor for ensuring a humane death as outlined in AVMA guidelines?

Using a precise flow rate that displaces 30% to 70% of the chamber volume per minute. (Correct answer)
Using CO2 sourced directly from a vehicle's exhaust.
Filling the chamber with 100% CO2 as quickly as possible.
Ensuring the chamber is pre-filled with CO2 before the animal is introduced.

Correct answer: Using a precise flow rate that displaces 30% to 70% of the chamber volume per minute.

The AVMA specifies a gradual fill method with a displacement rate of 30% to 70% of the chamber volume per minute. This slow introduction of CO2 allows the animal to lose consciousness from the gas's anesthetic properties before experiencing respiratory distress at higher concentrations. Pre-filling the chamber or using unfiltered exhaust is unacceptable.

Question 49: What safety equipment is required when handling zinc phosphide bait for vole control?

Only latex gloves
Steel-toed boots only
No special equipment
Chemical-resistant gloves, eye protection, and a NIOSH-approved respirator (Correct answer)

Correct answer: Chemical-resistant gloves, eye protection, and a NIOSH-approved respirator

Zinc phosphide reacts with moisture including perspiration to produce toxic phosphine gas, requiring multiple PPE items.

Question 50: What is the most effective long-term method to prevent a groundhog (woodchuck) from burrowing under a shed or deck foundation?

Install ultrasonic repellers on each corner of the structure
Place mothballs at all active burrow entrances each spring
Bury hardware cloth at least 12 inches deep with the bottom bent outward at a 90-degree angle (Correct answer)
Apply predator urine around the perimeter on a monthly schedule

Correct answer: Bury hardware cloth at least 12 inches deep with the bottom bent outward at a 90-degree angle

An L-shaped hardware cloth barrier buried underground physically prevents burrowing; the outward-angled foot discourages digging at the base of the barrier, making it effective year-round without repeated maintenance.

Question 51: What is the most effective bait for trapping Eastern gray squirrels in a cage trap?

Raw meat
Cheese
Bread soaked in milk
Peanut butter mixed with whole peanuts or sunflower seeds (Correct answer)

Correct answer: Peanut butter mixed with whole peanuts or sunflower seeds

Peanut butter with nuts or seeds combines strong scent attraction with visual and tactile appeal for squirrels.

Question 52: Which sign BEST indicates flying squirrel infestation rather than gray squirrel in an attic?

Nighttime scratching and running sounds (Correct answer)
Large gnaw marks on wooden beams
Entry holes larger than 3 inches in diameter
Daytime vocalizations from the attic

Correct answer: Nighttime scratching and running sounds

Flying squirrels are nocturnal, so nighttime activity sounds are the key distinguishing indicator compared to diurnal gray squirrels.

Nuisance Wildlife Control Operator Certification Exam

The NWCO certification exam tests knowledge of wildlife biology, nuisance animal control methods, trapping techniques, zoonotic diseases, and relevant laws and regulations required to operate as a licensed nuisance wildlife control operator.

Questions

120 min

Time Limit

80%

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Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

dec.ny.gov — Test delivery, eligibility, exam dates, fees, passing score, registration deadline, registration, renewal, time limit, score validity · verified Oct 2026
nwcoa.com — Eligibility, fees, passing score · verified Oct 2026