NWCO - Nuisance Wildlife Control Operator Exclusion and Habitat Modification Questions and Answers — Questions and Answers
Question 1: A client has persistent problems with woodpeckers drilling holes into their home's cedar siding. While deterrents have failed, the client wants a permanent solution for the affected areas. Which of the following represents the most effective exclusion method?
- Applying a thick, sticky bird-repellent gel to the damaged siding.
- Hanging several scare-eye balloons and long strips of reflective tape near the area.
- Spraying the siding with a commercial capsaicin-based liquid repellent after each rainstorm.
- Installing lightweight bird netting securely from the eaves to the base of the wall, creating a physical barrier. (Correct answer)
Correct answer: Installing lightweight bird netting securely from the eaves to the base of the wall, creating a physical barrier.
While repellents and scare tactics can provide temporary relief, the only permanent and effective solution is exclusion. Installing netting creates a physical barrier that prevents the woodpeckers from accessing the siding, thereby stopping the damage.
Question 2: A homeowner wants to make their property less attractive to rats and squirrels. Which of the following habitat modifications is most crucial for preventing these animals from gaining access to the roof and attic?
- Planting mint and other aromatic herbs around the foundation of the house.
- Trimming tree branches so they are at least 6 feet away from the roofline. (Correct answer)
- Keeping the lawn mowed to a height of no more than 2 inches.
- Removing all bird feeders from the property.
Correct answer: Trimming tree branches so they are at least 6 feet away from the roofline.
Rodents, particularly roof rats and squirrels, are adept climbers and frequently use overhanging tree branches as a direct 'bridge' to access a home's roof. By trimming branches to create a significant gap, this primary access route is eliminated.
Question 3: A NWCO inspects an attic in early June and confirms a large maternity colony of little brown bats is present. Before installing a one-way excluder device, what is the most critical consideration?
- The presence of non-flying young bats, which would be trapped inside. (Correct answer)
- The estimated monetary value of the guano that has accumulated.
- The specific type of roofing material on the house.
- The exact number of adult bats in the colony to estimate the job's duration.
Correct answer: The presence of non-flying young bats, which would be trapped inside.
Performing an exclusion during the maternity season (typically late spring through summer) is improper because it will trap the flightless pups inside the structure. This leads to their death, which is inhumane and can cause significant odor problems. Exclusions must be timed for after the young are able to fly.
Question 4: To exclude burrowing animals like groundhogs or armadillos from a garden, a NWCO plans to install a wire mesh fence. For the fence to be effective against digging, what is the most important design component?
- The fence must be at least 6 feet tall to prevent the animals from climbing over.
- The posts must be made of steel T-posts rather than wood.
- A wire mesh footer bent at a 90-degree angle must be buried and extended outward from the fence base. (Correct answer)
- The mesh openings should be less than 1/2 inch by 1/2 inch.
Correct answer: A wire mesh footer bent at a 90-degree angle must be buried and extended outward from the fence base.
Burrowing animals will easily dig under a simple vertical fence. An 'L-shaped' footer or apron, attached to the bottom of the fence and buried several inches deep extending away from the protected area, is critical to block their attempts to tunnel underneath.
Question 5: A client is experiencing issues with snakes in their yard and around their foundation. Which of the following is a primary example of habitat modification to make the area less attractive to snakes?
- Applying a perimeter treatment of a commercial snake repellent powder.
- Introducing a predator, such as a domestic cat, to the property.
- Removing ground cover such as brush piles, landscape timbers, and overgrown vegetation. (Correct answer)
- Placing several ultrasonic pest repellers around the yard.
Correct answer: Removing ground cover such as brush piles, landscape timbers, and overgrown vegetation.
Snakes are attracted to areas that provide shelter (harborage) and food. By removing dense ground cover like brush, wood piles, tall grass, and debris, you eliminate the places where snakes hide and hunt for prey. This makes the habitat unsuitable and is the most effective long-term solution.
Question 6: A skunk has taken up residence under a concrete porch, and the homeowner wants it gone. After identifying the main entry point, the NWCO's goal is to allow the skunk to leave on its own before permanently sealing the hole. What is the most appropriate tool for this task?
- A baited cage trap placed directly in front of the opening.
- A sheet of plywood propped against the opening that the skunk can push out.
- A one-way excluder door specifically designed for this purpose. (Correct answer)
- A large body-gripping trap set within the opening.
Correct answer: A one-way excluder door specifically designed for this purpose.
A one-way door is an exclusion device that allows an animal to exit a structure but prevents re-entry. This is the ideal tool for humanely removing a denning animal without capture, allowing for the area to be permanently sealed once the animal has departed.
NWCO - Nuisance Wildlife Control Operator Exclusion and Habitat Modification Questions and Answers
A client has persistent problems with woodpeckers drilling holes into their home's cedar siding.
While deterrents have failed, the client wants a permanent solution for the affected areas.
Which of the following represents the most effective exclusion method?