NWCO - Nuisance Wildlife Control Operator Chemical Control Methods 2 — Questions and Answers
Question 1: Which federal law regulates the registration and use of pesticides in wildlife damage management?
- Clean Air Act
- Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) (Correct answer)
- Endangered Species Act
- Resource Conservation and Recovery Act
Correct answer: Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
FIFRA governs all aspects of pesticide regulation including products used in wildlife damage management.
FIFRA is administered by the EPA and requires that all pesticide products be registered before sale or distribution. It mandates proper labeling, establishes use classifications, and makes it a federal violation to use any pesticide inconsistent with its labeling. NWCO operators must follow all label directions and hold appropriate certifications for restricted-use products.
Question 2: What is the primary mechanism of action of second-generation anticoagulant rodenticides like brodifacoum?
- Nervous system paralysis
- Inhibition of vitamin K recycling, preventing blood clotting (Correct answer)
- Cardiac arrest
- Respiratory failure
Correct answer: Inhibition of vitamin K recycling, preventing blood clotting
Second-generation anticoagulants inhibit vitamin K epoxide reductase, preventing recycling of vitamin K needed for clotting factor synthesis.
SGARs inhibit vitamin K epoxide reductase, the enzyme responsible for recycling vitamin K. Without functional vitamin K, the liver cannot produce clotting factors, leading to uncontrolled hemorrhaging and death in 3-7 days. SGARs bind more tightly and persist longer than first-generation anticoagulants, making them a greater secondary poisoning risk to predators.
Question 3: Why are SGARs now restricted to use ONLY in and around buildings by EPA regulations?
- They are too expensive for field use
- To reduce secondary poisoning of raptors, foxes, and other non-target predators (Correct answer)
- They evaporate too quickly outdoors
- They attract non-target herbivores
Correct answer: To reduce secondary poisoning of raptors, foxes, and other non-target predators
EPA restricted SGARs to structural use to reduce secondary poisoning in non-target wildlife that consume poisoned rodents.
SGARs persist in rodent liver tissue for months, creating secondary poisoning when predators consume poisoned rodents. Studies documented widespread SGAR contamination in raptor populations. By restricting use to structures, the EPA aims to limit rodent exposure to areas where they die inside buildings rather than in the open where predators access them.
Question 4: What must an NWCO operator record when applying a restricted-use pesticide?
- Only the product name and date
- Product name, EPA registration number, amount applied, location, date, target pest, and applicator certification number (Correct answer)
- Just the client's name and address
- No records are required
Correct answer: Product name, EPA registration number, amount applied, location, date, target pest, and applicator certification number
Comprehensive application records are required for restricted-use pesticides including product details, quantities, location, and applicator information.
FIFRA and state regulations require detailed records including applicator name and certification, date and time, product trade name and EPA registration number, amount applied, location, target pest, weather conditions for outdoor applications, and method. Records must be maintained for 2-3 years and be available for inspection.
Question 5: Which fumigant is commonly used for burrowing rodent control and requires a restricted-use license?
- Carbon dioxide
- Aluminum phosphide (Correct answer)
- Methane
- Nitrogen
Correct answer: Aluminum phosphide
Aluminum phosphide produces phosphine gas when contacting moisture and is the most commonly used restricted-use fumigant for burrowing rodent control.
Aluminum phosphide reacts with moisture to produce phosphine gas, which is highly toxic to all oxygen-breathing organisms. It is used for burrowing rodents by placing tablets into burrows and sealing entrances. Due to extreme toxicity, it requires a restricted-use pesticide applicator license and strict adherence to buffer zones from occupied structures.
Question 6: What determines the minimum distance between outdoor rodenticide bait stations and water bodies?
- No minimum distance is required
- A standard 50-foot rule applies to all products
- The distance specified on the specific product label (Correct answer)
- 100 yards from any water source
Correct answer: The distance specified on the specific product label
The specific product label dictates distances from water bodies, as requirements vary between products.
Under FIFRA, the product label is the law. Each rodenticide product has specific label requirements regarding placement near water bodies that vary between products and formulations. Operators must read and follow the specific label. General rules do not substitute for label compliance. States may have additional restrictions.
NWCO - Nuisance Wildlife Control Operator Chemical Control Methods 2
Which federal law regulates the registration and use of pesticides in wildlife damage management?