Page 1 of 115
SOUTH CAROLINA COMMERCIAL PESTICIDE
APPLICATORS EXAM QUESTIONS AND
DETAILED SOLUTIONS JUST RELEASED
POINT-FORM SUMMARIZED EXAM COVERAGE (SC Commercial Pesticide Applicator Exam)
• Regulated by Clemson University Department of Pesticide Regulation (DPR) as state lead agency
• Commercial applicator: Applies restricted use pesticides or any pesticide in mandatory
categories to another's property for compensation
• Private applicator: Applies restricted use pesticides on own or employer's agricultural property
• Non-commercial applicator: Applies restricted use pesticides as part of job (government
employees, institutional staff) without offering commercial services
• Commercial Pesticide Business License required for companies offering commercial services;
each location requires separate license
• FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act) is primary federal law governing
pesticide registration
• Restricted Use Pesticide (RUP) may be purchased and used only by certified applicators
• Pesticide label is a legal document enforceable under federal and state law
• Minimum age for certified applicator: 18 years in most states
• Signal word "DANGER" indicates high acute toxicity (Toxicity Category I)
• Signal word "WARNING" indicates moderate toxicity
• Signal word "CAUTION" indicates slight or low toxicity
• LD50 = Lethal dose that kills 50% of test animal population; lower number = higher toxicity
• PPE = Personal Protective Equipment; required by label for safe handling
• Worker Protection Standard (WPS) applies to agricultural pesticide use protecting workers and
handlers
• Reentry Interval (REI) = time workers must wait before entering treated area
• Most common route of pesticide exposure is dermal (skin absorption)
• SDS (Safety Data Sheet) provides information about safety and hazards of products
• First step in pesticide spill response is to contain the spill
• Non-target organisms are species other than the intended pest affected by application
• Triple-rinsing containers required before disposal or recycling
• Buffer zones protect non-target areas from drift and runoff
• Residual pesticides remain active for extended periods
• Groundwater contamination risk highest when pesticide is highly soluble and persistent
• Biological control agents include predatory insects that naturally manage pest populations
• Contact pesticides kill pests by direct exposure
• Wind speed is the most influential factor affecting spray drift
• Systemic pesticides work by moving within plant tissues after absorption
• PPE should be removed after leaving treated area and washing properly
• Agitation in spray tank keeps pesticide evenly mixed for consistent application
• Compatibility test performed before mixing to determine safe mixing order and prevent
chemical reactions
• Pesticides should be stored in locked, ventilated area away from food/feed
• Traps are an example of physical pest control method
, Page 2 of 115
• Point-source contamination originates from specific identifiable location (e.g., equipment
washing near well)
• Active ingredient is the chemical responsible for controlling the pest
• Excess pesticide should be disposed of by applying according to label instructions
• Fumigants are gases used to control pests
• Coarse droplets reduce drift compared to fine droplets
• Tolerance = legal residue limit allowed on food commodities
• Closed mixing systems reduce applicator exposure to concentrated pesticides
• Best way to protect pollinators is to spray at night when bees are inactive
• Volatility = pesticide's tendency to evaporate into vapor
• Mode of action = how a pesticide kills or controls a pest (biochemical mechanism)
• Chemigation = applying pesticides through irrigation systems
• Pre-harvest interval (PHI) = time between last application and crop harvest
• Cholinesterase inhibition is mechanism of organophosphate and carbamate insecticides
• Atropine is antidote for organophosphate and carbamate poisoning
• Integrated Pest Management (IPM) uses multiple control methods with economic thresholds
• Pesticide resistance develops when same mode of action used repeatedly
Core Examination Requirements:
• All commercial applicators must pass Core exam (basic safety, laws, environmental protection)
• Core exam must be passed BEFORE or alongside category exam; passing category without Core
does NOT permit RUP use
• Passing score: 70% minimum required
Category Requirements (SC has 12 main categories with subcategories):
• Category 1: Agricultural Pest Control (1A Plant, 1B Animal, 1C Stored Grain, 1D Soil Fumigation)
• Category 2: Forest Pest Control
• Category 3: Ornamental and Turf Pest Control (MANDATORY license required)
• Category 4: Seed Treatment
• Category 5: Aquatic Pest Control (MANDATORY license required)
• Category 6: Right-of-Way Pest Control
• Category 7A: Industrial, Institutional, Structural, Health-Related (MANDATORY; business license
typically required)
• Category 7B: Fumigation (structural fumigation)
• Category 8: Public Health Pest Control (MANDATORY; state/federal employees)
• Category 9: Regulatory Pest Control (governmental employees)
• Category 10: Demonstration and Research Pest Control
• Category 11: Aerial Applicator
• Category 12: Miscellaneous (12A Wood Preservation, 12B Anti-fouling paints, 12C Small Animal,
12D Sewer Line, 12E Glyphosate Limited)
Licensing Process:
• Two ways to obtain commercial license: take SC exams OR reciprocate from state with
reciprocal agreement
• Pass Core exam and at least one category exam
• Submit Commercial/Non-commercial Pesticide License Application
• Submit Evidence of Financial Responsibility Form (completed by insurance company; REQUIRED
for new applicators)
• Pay new license fee: Commercial $50 (fee may vary)
• License renewal period: every 3 years with CEUs
, Page 3 of 115
1. Which agency is the state lead responsible for pesticide enforcement and applicator licensing in South
Carolina?
A) South Carolina Department of Health and Environmental Control
B) South Carolina Department of Agriculture
C) Clemson University Department of Pesticide Regulation
D) Environmental Protection Agency
Answer: C – The Clemson University Department of Pesticide Regulation (DPR) is the state lead agency
for pesticide enforcement and applicator licensing in South Carolina.
2. The primary federal law governing pesticide registration, labeling, distribution, and use in the United
States is:
A) Food Quality Protection Act (FQPA)
B) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
C) Occupational Safety and Health Act (OSHA)
D) Clean Water Act (CWA)
Answer: B – FIFRA is the primary federal law regulating pesticide registration, labeling, distribution, and
use.
, Page 4 of 115
3. A "Restricted Use Pesticide" (RUP) may be purchased and used only by which category of individuals?
A) Any adult over 18 years of age
B) Certified applicators or persons under their direct supervision
C) Farm owners regardless of certification
D) Anyone who passes a retail store exam
Answer: B – RUPs require certification due to potential hazards to humans or the environment; only
certified applicators or persons under their direct supervision may purchase and use them.
4. Under federal and state law, the pesticide label is considered a:
A) Recommendation that may be modified by experienced applicators
B) Marketing tool with no legal enforcement
C) Legal document enforceable by law
D) Optional guidance when conditions vary
Answer: C – The pesticide label is legally enforceable under both federal (FIFRA) and state law; using a
pesticide inconsistent with the label is a violation.
5. What does the signal word "DANGER" on a pesticide label indicate about the product's acute toxicity?
A) The product has slight or low toxicity
SOUTH CAROLINA COMMERCIAL PESTICIDE
APPLICATORS EXAM QUESTIONS AND
DETAILED SOLUTIONS JUST RELEASED
POINT-FORM SUMMARIZED EXAM COVERAGE (SC Commercial Pesticide Applicator Exam)
• Regulated by Clemson University Department of Pesticide Regulation (DPR) as state lead agency
• Commercial applicator: Applies restricted use pesticides or any pesticide in mandatory
categories to another's property for compensation
• Private applicator: Applies restricted use pesticides on own or employer's agricultural property
• Non-commercial applicator: Applies restricted use pesticides as part of job (government
employees, institutional staff) without offering commercial services
• Commercial Pesticide Business License required for companies offering commercial services;
each location requires separate license
• FIFRA (Federal Insecticide, Fungicide, and Rodenticide Act) is primary federal law governing
pesticide registration
• Restricted Use Pesticide (RUP) may be purchased and used only by certified applicators
• Pesticide label is a legal document enforceable under federal and state law
• Minimum age for certified applicator: 18 years in most states
• Signal word "DANGER" indicates high acute toxicity (Toxicity Category I)
• Signal word "WARNING" indicates moderate toxicity
• Signal word "CAUTION" indicates slight or low toxicity
• LD50 = Lethal dose that kills 50% of test animal population; lower number = higher toxicity
• PPE = Personal Protective Equipment; required by label for safe handling
• Worker Protection Standard (WPS) applies to agricultural pesticide use protecting workers and
handlers
• Reentry Interval (REI) = time workers must wait before entering treated area
• Most common route of pesticide exposure is dermal (skin absorption)
• SDS (Safety Data Sheet) provides information about safety and hazards of products
• First step in pesticide spill response is to contain the spill
• Non-target organisms are species other than the intended pest affected by application
• Triple-rinsing containers required before disposal or recycling
• Buffer zones protect non-target areas from drift and runoff
• Residual pesticides remain active for extended periods
• Groundwater contamination risk highest when pesticide is highly soluble and persistent
• Biological control agents include predatory insects that naturally manage pest populations
• Contact pesticides kill pests by direct exposure
• Wind speed is the most influential factor affecting spray drift
• Systemic pesticides work by moving within plant tissues after absorption
• PPE should be removed after leaving treated area and washing properly
• Agitation in spray tank keeps pesticide evenly mixed for consistent application
• Compatibility test performed before mixing to determine safe mixing order and prevent
chemical reactions
• Pesticides should be stored in locked, ventilated area away from food/feed
• Traps are an example of physical pest control method
, Page 2 of 115
• Point-source contamination originates from specific identifiable location (e.g., equipment
washing near well)
• Active ingredient is the chemical responsible for controlling the pest
• Excess pesticide should be disposed of by applying according to label instructions
• Fumigants are gases used to control pests
• Coarse droplets reduce drift compared to fine droplets
• Tolerance = legal residue limit allowed on food commodities
• Closed mixing systems reduce applicator exposure to concentrated pesticides
• Best way to protect pollinators is to spray at night when bees are inactive
• Volatility = pesticide's tendency to evaporate into vapor
• Mode of action = how a pesticide kills or controls a pest (biochemical mechanism)
• Chemigation = applying pesticides through irrigation systems
• Pre-harvest interval (PHI) = time between last application and crop harvest
• Cholinesterase inhibition is mechanism of organophosphate and carbamate insecticides
• Atropine is antidote for organophosphate and carbamate poisoning
• Integrated Pest Management (IPM) uses multiple control methods with economic thresholds
• Pesticide resistance develops when same mode of action used repeatedly
Core Examination Requirements:
• All commercial applicators must pass Core exam (basic safety, laws, environmental protection)
• Core exam must be passed BEFORE or alongside category exam; passing category without Core
does NOT permit RUP use
• Passing score: 70% minimum required
Category Requirements (SC has 12 main categories with subcategories):
• Category 1: Agricultural Pest Control (1A Plant, 1B Animal, 1C Stored Grain, 1D Soil Fumigation)
• Category 2: Forest Pest Control
• Category 3: Ornamental and Turf Pest Control (MANDATORY license required)
• Category 4: Seed Treatment
• Category 5: Aquatic Pest Control (MANDATORY license required)
• Category 6: Right-of-Way Pest Control
• Category 7A: Industrial, Institutional, Structural, Health-Related (MANDATORY; business license
typically required)
• Category 7B: Fumigation (structural fumigation)
• Category 8: Public Health Pest Control (MANDATORY; state/federal employees)
• Category 9: Regulatory Pest Control (governmental employees)
• Category 10: Demonstration and Research Pest Control
• Category 11: Aerial Applicator
• Category 12: Miscellaneous (12A Wood Preservation, 12B Anti-fouling paints, 12C Small Animal,
12D Sewer Line, 12E Glyphosate Limited)
Licensing Process:
• Two ways to obtain commercial license: take SC exams OR reciprocate from state with
reciprocal agreement
• Pass Core exam and at least one category exam
• Submit Commercial/Non-commercial Pesticide License Application
• Submit Evidence of Financial Responsibility Form (completed by insurance company; REQUIRED
for new applicators)
• Pay new license fee: Commercial $50 (fee may vary)
• License renewal period: every 3 years with CEUs
, Page 3 of 115
1. Which agency is the state lead responsible for pesticide enforcement and applicator licensing in South
Carolina?
A) South Carolina Department of Health and Environmental Control
B) South Carolina Department of Agriculture
C) Clemson University Department of Pesticide Regulation
D) Environmental Protection Agency
Answer: C – The Clemson University Department of Pesticide Regulation (DPR) is the state lead agency
for pesticide enforcement and applicator licensing in South Carolina.
2. The primary federal law governing pesticide registration, labeling, distribution, and use in the United
States is:
A) Food Quality Protection Act (FQPA)
B) Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA)
C) Occupational Safety and Health Act (OSHA)
D) Clean Water Act (CWA)
Answer: B – FIFRA is the primary federal law regulating pesticide registration, labeling, distribution, and
use.
, Page 4 of 115
3. A "Restricted Use Pesticide" (RUP) may be purchased and used only by which category of individuals?
A) Any adult over 18 years of age
B) Certified applicators or persons under their direct supervision
C) Farm owners regardless of certification
D) Anyone who passes a retail store exam
Answer: B – RUPs require certification due to potential hazards to humans or the environment; only
certified applicators or persons under their direct supervision may purchase and use them.
4. Under federal and state law, the pesticide label is considered a:
A) Recommendation that may be modified by experienced applicators
B) Marketing tool with no legal enforcement
C) Legal document enforceable by law
D) Optional guidance when conditions vary
Answer: C – The pesticide label is legally enforceable under both federal (FIFRA) and state law; using a
pesticide inconsistent with the label is a violation.
5. What does the signal word "DANGER" on a pesticide label indicate about the product's acute toxicity?
A) The product has slight or low toxicity
